COASTAL TANKSHIPS, U.S.A., INC., Appellant, v. Florence ANDERSON, Administratrix of the Estate of Morris Anderson, Deceased, Appellee.
No. 01-99-01345-CV.
Court of Appeals of Texas, Houston (1st Dist.).
May 31, 2002.
Rehearing Overruled Aug. 8, 2002.
87 S.W.3d 591
Having sustained appellant‘s first issue, we do not consider appellant‘s two other issues on appeal. Appellant is entitled to withdraw his plea.4 The judgment of the trial court is reversed and the cause is remanded for further proceedings.
Paul Dodson, Huseman & Pletcher, Corpus Christi, for appellee.
Panel consists of Justices COHEN, BRISTER,* and SMITH.**
EN BANC OPINION
TERRY JENNINGS, Justice.
Jennings writes for the majority of the en banc Court, joined by Chief Justice Schneider and Justices Hedges, Taft, Nuchia, and Radack. Justice Brister concurs in the judgment of the en banc Court. Justice Cohen joins sections I through IV(D) of the majority opinion, does not join section IV(E), and dissents from the judgment of the en banc Court, joined by Justices Mirabal and Smith.
In this personal injury suit for unseaworthiness under the general maritime law and for negligence under the Jones Act,1 appellant, Coastal Tankships, U.S.A., Inc. (Coastal), appeals from a jury verdict awarding damages to appellee, Florence Anderson, administratrix of the estate of Morris Anderson.2 Coastal presents six issues for our review. In its first and second issues, which are dispositive of the appeal, Coastal contends that (1) the trial court abused its discretion in allowing Anderson‘s medical expert to testify that
We note at the outset, in regard to these two issues, that our primary role is to ascertain whether the trial court abused its discretion in finding reliable, and thus in admitting, expert testimony under
I. Facts and Procedural Background
Coastal owned and operated the steam tanker S.S. COASTAL MANATEE. Anderson joined the crew of the COASTAL MANATEE on July 6, 1994 as a utility hand in the steward‘s department. He was healthy and physically capable of performing his duties when his voyage began. Before then, he had suffered no chronic illnesses, pneumonia, or respiratory problems; had never smoked; had been physically active; and had passed Coastal‘s health examination. During the voyage, the COASTAL MANATEE twice loaded naphtha, which the vessel carried for approximately 11 days. Viewed in the light most favorable to Anderson, both times naphtha was loaded, he and other crew members smelled particularly strong chemical fumes throughout the ship. Anderson and at least one other crew member, radio electronics officer Butch Smith, smelled fumes in their quarters. The fumes once drove Smith out of his room to sleep elsewhere.4 Anderson soon began having headaches, shortness of breath, nausea, dizziness, shoulder stiffness, and tightness in his chest. Anderson was sent to his quarters to rest for at least five days, and his condition worsened until he was so ill that he could no longer perform his duties. None of the other approximately 29 crew members aboard the COASTAL MANATEE became ill from the fumes or developed BOOP, and only one to three other crew members felt occasional nausea. On September 23, 1994, Anderson had to be taken ashore aboard a motor launch. When he came ashore, Anderson was sick, had labored breathing, and looked like he “was caving in.”
A few days later, Anderson went to the hospital under the care of Dr. Eugene Brown, who referred Anderson to pulmonary specialist Dr. David Miller. Dr. Miller became Anderson‘s treating physician and diagnosed Anderson with BOOP. The evidence in the light most favorable to Anderson shows that, despite objective testing indiсating his respiratory health
Anderson sued Coastal for his personal injuries, alleging negligence under the Jones Act and unseaworthiness under general maritime law. The case was tried to a jury. Over the objection of Coastal, the videotaped deposition testimony of Dr. Miller, Anderson‘s sole testifying expert on medical causation, was introduced into evidence.
Dr. Miller, who had been board certified in pulmonary disease and internal medicine for 15 and 20 years respectively, testified that he saw “lots of ... common inhalation type problems” in his practice. Dr. Miller stated that Anderson told him he had inhaled a “gaseous” material (naphtha) while working aboard the COASTAL MANATEE and related the acute symptoms he had suffered.5 Dr. Miller noted that Anderson‘s oral history was consistent with Dr. Miller‘s experience of those injured by chemical exposure. Dr. Miller ordered chest x-rays and lung-function tests. After reviewing the lung-function test results, examining Anderson, and reviewing Anderson‘s medical records, Dr. Miller initially diagnosed Anderson with pneumonia secondary to chemical inhalation. The lung x-rays showed abnormal areas, which were also consistent with Anderson‘s symptoms and with injury from chemical inhalation. Dr. Miller then ordered a surgical biopsy, which revealed that Anderson had BOOP. In the end, Dr. Miller diagnosed that Anderson had sustained a “significant inhalation injury,” consistent with the inhalation of fumes aboard the vessel, and opined that “chemical inhalation” had caused Anderson‘s acute lung problems. In reaching this conclusion, Dr. Miller ruled out several other possible causes of Anderson‘s BOOP by considering Anderson‘s work and personal history, temporal proximity of the fumes and symptoms, medical records, and test results.6
On cross-examination, Dr. Miller conceded that BOOP is usually idiopathic.7 Nonetheless, Dr. Miller believed there was a causal relationship between the chemical exposure and Anderson‘s BOOP, based on his examination, the test results, the timing of the illness, and Anderson‘s history.8
Furthermore, although Dr. Keith Wilson, Coastal‘s own medical-causation expert, agreed that BOOP is idiopathic about a third of the time, he conceded that BOOP has some recognized causes, including some toxic fume exposures.9 Dr. Wilson also testified that chemical pneumonia, which Dr. Brown concluded Mr. Anderson first had, can cause BOOP.
However, Dr. Miller was not aware of any literature associating BOOP with exposure to chemicals other than oxides of nitrogen, which he conceded are found “everywhere.” Similarly, Dr. Wilson testified that he was unable to find any literature connecting BOOP to naphtha exposure. Dr. Wilson also testified without dispute that the medical literature associates BOOP with only limited chemical agents, such as nitrogens of oxide, which naphtha does not contain. Additionally, Dr. Miller acknowledged (1) he was not a toxicologist, (2) he did not know how much naphtha Anderson was exposed to or for how long, and (3) his diagnosis presumed that there was a causal relationship between naphtha exposure and BOOP.
Aside from the above expert testimony, the only other evidence of causation in the record was (1) Dr. Brown‘s statements in the medical records, the discharge summary, and other notes; (2) the naphtha material safety data sheet (MSDS);10 and (3) lay testimony that Anderson was healthy before inhaling the fumes, but ill very soon afterwards.
The jury found Coastal negligent and the vessel unseaworthy and awarded Anderson $1,254,500, including damages for past physical pain and mental anguish.
II. Standard of Review
We, as an appellate court, may not disturb a trial court‘s determination that a witness is or is not qualified as an expert unless a clear abuse of discretion is shown. Gammill, 972 S.W.2d at 718-19; Hernandez v. State, 53 S.W.3d 742, 750 (Tex App.—Houston [1st Dist.] 2001, no pet.). We will not conclude that a trial court abused its discretion simply because we would have ruled differently in the same circumstances or the trial court committed a mere error in judgment. See Hernandez, 53 S.W.3d at 750. The test is not whether the facts present an aрpropriate case for the trial court‘s action in the opinion of the reviewing court; rather, we gauge an abuse of discretion by whether the trial court acted without reference to any guiding rules or principles. E.I. du Pont de Nemours & Co. v. Robinson, 923 S.W.2d 549, 558 (Tex.1995). Thus, a trial court enjoys wide latitude in determining whether expert testimony is admissible. Hernandez, 53 S.W.3d at 750; see Hon. Harvey Brown, Procedural Issues Under Daubert, 36 HOUS. L.REV. 1133, 1159 (1999) [hereinafter “Brown—Procedural“].
III. Expert Testimony
An expert may testify on scientific, technical, or other specialized subjects if the
A. Daubert
In Daubert, the Supreme Court held that the Frye11 “general acceptance” test was no longer applicable under the new Federal Rules of Evidence and offered some “general observations.” 509 U.S. at 593, 113 S.Ct. at 2796. These “general observations” set new standards for the admissibility of expert testimony. The Court held that “the trial judge must ensure that any and all scientific testimony or evidence admitted is not only relevant, but reliable.” 509 U.S. at 589, 113 S.Ct. at 2795 (emphasis added).
Although “not presum[ing] to set out a definitive checklist or test” in considering the admissibility of expert scientific testimony, the Daubert Court offered the following as a “flexible” inquiry to be made by the trial court:
- whether the theory or technique “can be (and has been) tested“;
- whether the theory or technique “has been subjected to peer review and publication“;
- what is “the known or potential rate of error” for any tests or techniques; and
- whether there is “general acceptance” in the relevant scientific community.
509 U.S. at 593-94, 113 S.Ct. at 2796-97 (citations omitted).
B. Daubert‘s Texas Progeny
Emphasizing the importance of trial courts’ “scrutiniz[ing] proffered evidence for scientific reliability when it is based upon novel scientific theories, sometimes referred to as ‘junk science,‘” but not limiting its holding to novel theories, the Texas Supreme Court adopted the Daubert analysis in regard to
- the extent to which the theory has been tested;
- the extent to which the technique relies upon the expert‘s subjective interpretation;
- whether the theory has been subject to peer review;
- the technique‘s potential rate of error;
- whether the underlying theory or technique has been generally accepted as valid by the relevant sciеntific community; and
- the nonjudicial uses that have been made of the theory or technique.
Daubert‘s test was adopted in almost identical form by the Court of Criminal Appeals.12 For example, after having previously utilized a Daubert-esque analysis in Kelly v. State, 824 S.W.2d 568 (Tex.Crim.App.1992),13 the Texas Court of Criminal
- the extent to which the underlying scientific theory and technique are accepted as valid by the relevant scientific community, if such a community can be ascertained;
- the qualifications of the expert(s) testifying;
- the existence of literature supporting or rejecting the underlying scientific theory and technique;
- the potential rate of error of the technique;
- the availability of other experts to test and evaluate the technique;
- the clarity with which the underlying scientific theory and technique can be explained to the court; and
- the experience and skill of the person(s) who applied the technique on the occasion in question.
Id. at 554 & n. 6 (citing Kelly, 824 S.W.2d at 573) (emphasis added). This inquiry is “substantively identical to the inquiry mandated by the Supreme Court ... in Daubert....” Nenno v. State, 970 S.W.2d 549, 560 (Tex.Crim.App.1998), overruled on other grounds, State v. Terrazas, 4 S.W.3d 720, 727 (Tex.Crim.App.1999).
We have noted that our highest courts have repeatedly emphasized that the pertinent, suggested inquiries in assessing the reliability of expert testimony are applied flexibly and are not exclusive or required.14 Hernandez, 53 S.W.3d at 752 (citing Daubert, 509 U.S. at 593-94, 113 S.Ct. at 2797 and Robinson, 923 S.W.2d at 557). A trial court may make other inquiries, instead of or in addition to those noted in Daubert, Robinson, and Jordan, that are germane to an expert‘s qualifications and field of expertise in determining the reliability of the proffered evidence. Hernandez, 53 S.W.3d at 752. The “methods of proving reliability will vary, depending upon the field of expertise.”15 Id.
Both the Texas Supreme Court and the Texas Court of Criminal Appeals have also held that non-scientific expert testimony (i.e., that involving technical or other specialized knowledge) must also meet the reliability requirement of Daubert/Robinson/Jordan. Gammill, 972 S.W.2d at 718; Nenno, 970 S.W.2d at 562. Both courts have further noted, however, that the Daubert/Robinson/Jordan inquiries for assessing the reliability of scientific evidence may not always apply to other kinds of expert testimony. Gammill, 972 S.W.2d at 726; Nenno, 970 S.W.2d at 562; accord
In Nenno, the Court of Criminal Appeals pointed out that the Daubert/Robinson/Jordan inquiries “do not necessarily apply outside the hard sciеnce context.” Id. at 561 (emphasis added). The court emphasized that “methods of proving reliability will vary, depending upon the field of expertise,” and recognized that,
[w]hen addressing fields of study aside from the hard sciences, such as the social sciences or fields that are based primarily upon experience and training as opposed to the scientific method, Kelly‘s requirement of reliability applies but with less rigor than to the hard sciences. To speak of the validity of a “theory” or “technique” in these fields may be roughly accurate but somewhat misleading.
Nenno, 970 S.W.2d at 561 (emphasis added).16
Acknowledging that “hard science methods of validation, such as assessing the potential rate of error or subjecting a theo-
- whether the field of expertise is a legitimate one;
- whether the subject matter of the expert‘s testimony is within the scope of that field; and
- whether the expert‘s testimony properly relies upon and/or utilizes the principles involved in the field.17
Mindful of these guiding rules and principles, we address Coastal‘s first and second issues.
IV. Analysis
In its first issue, Coastal contends the trial court abused its discretion by allowing Anderson‘s medical expert, Dr. David Miller, to testify that naphtha exposure caused Anderson‘s BOOP. Specifically, Coastal claims Dr. Miller‘s methodology was unreliable. At trial, Coastal timely objected to Dr. Miller‘s opinion testimony on causation. Once Coastal objected, Anderson had the burden to show that Dr. Miller‘s methodology was sound. See Gammill, 972 S.W.2d. at 718.
A. Applicable Causation Burdens and Principles
Two burdens of proof apply. Under the Jones Act, Anderson had to show that Coastal‘s negligence played any part, “even the slightest,” in producing Anderson‘s BOOP. E.g., Maritime Overseas Corp. v. Ellis, 971 S.W.2d 402, 406 (Tex.1998). For his unseaworthiness claim, Anderson had to show that the unseaworthy condition played a substantial part in bringing about or actually causing Anderson‘s BOOP and that his BOOP was either a direct result or a reasonably probable consequence of the COASTAL MANATEE‘S unseaworthiness. E.g., Offshore Pipelines v. Schooley, 984 S.W.2d 654, 663 (Tex.App-Houston [1st Dist.] 1998, no pet.).
Two causation principles also apply. First, in regard to the causation issues presented in this case, we are mindful that toxic-tort case law is instructive by analogy. One common way of understanding toxic-tort causation is to break it down into general causation and specific causa-
ignated for publication) (quoting Havner and applying distinction); Minnesota Mining & Mfg. Co. v. Atterbury, 978 S.W.2d 183, 191 (Tex.App.-Texarkana 1998, pet. denied) (same); Sanders at 110.20 Proving one type of causation does not necessarily prove the other, and logic dictates that both are needed for a plaintiff in a toxic-tort suit to prevail.21 See Atterbury, 978
Second, expert testimony is required to prove causation in this case, contrary to Anderson‘s claim. To establish causation in a personal injury case, a plaintiff must prove the defendant‘s conduct caused an event and that that event caused the plaintiff to suffer compensable damages. See Burroughs Wellcome Co. v. Crye, 907 S.W.2d 497, 499 (Tex.1995). The causal link between the event sued upon and the plaintiff‘s injuries must be shown by competent evidence. Morgan v. Compugraphic Corp., 675 S.W.2d 729, 731 (Tex. 1984). A jury may decide the required causal nexus between the event sued upon and the plaintiff‘s injuries when (1) general experience and common sense will enable a lay person fairly to determine the causal nexus, (2) expert testimony establishes a traceable chain of causation from injuries back to the event, or (3) expert testimony shows a probable-cause nexus. Weidner v. Sanchez, 14 S.W.3d 353, 370 (Tex.App.-Houston [14th Dist.] 2000, no pet.); Blankenship v. Mirick, 984 S.W.2d 771, 775 (Tex.App-Waco 1999, pet. denied).
The evidence was undisputed that BOOP has several possible causes and is idiopathic a third of the time. General experience and common sense simply do
not enable a fair understanding of causation under these circumstances; accordingly, expert testimony is required.23 See Lenger v. Physician‘s Gen. Hosp., Inc., 455 S.W.2d 703, 706 (Tex.1970) (noting that “when the proof discloses that a given result may have occurred by reason of more than one proximate cause, and the jury can do no more than guess or speculate as to which is, in fact, the efficient cause, the submission of such choice to the jury has been consistently condemned by this court and by other courts.“); Ins. Co. of N. Am. v. Myers, 411 S.W.2d 710, 713 (Tex.1966) (holding that, when coupled with insufficient expert testimony, lay testimony and factual circumstances did not show injury aggravated cancerous tumor); Allen v. Roddis Lumber & Veneer Co., 796 S.W.2d 758, 763 (Tex.App.-Corpus Christi 1990, writ denied) (holding lay affidavit created no fact issues on cause of formaldehyde emissions); Hernandez v. Tex. Employers Ins. Ass‘n, 783 S.W.2d 250, 252-53 (Tex.App.-Corpus Christi 1989, no writ) (holding expert testimony needed to determine cause of asthma, which had uncertain causal nature); Orkin Exterminating Co. v. Davis, 620 S.W.2d 734, 736-37 (Tex. Civ.App.-Dallas 1981, writ ref‘d n.r.e.) (holding that, because expert testimony
B. The Reliability of Dr. Miller‘s Differential Diagnosis
Here, because Dr. Miller‘s medical causation opinion testimony falls outside the category of “hard science,” and not all of the Daubert/Robinson/Jordan inquiries thus make sense when applied to his opinion testimony, we turn to Nenno‘s translation of the these inquiries. We therefore consider
- whether Dr. Miller‘s field of expertise is a legitimate one;
- whether the subject matter of Dr. Miller‘s testimony is within the scope of that field; and
- whether Dr. Miller‘s testimony properly relies upon and/or utilizes the principles involved in the field.
The trial court would not have abused its discretion if it impliedly found that Dr. Miller met the first two Nenno inquiries. As a pulmonologist, Dr. Miller‘s field of expertise is certainly legitimate. His testimony further revealed that he has extensive experience in diagnosing and treating acute lung injuries, including those caused by chemical exposure. His causation opinion testimony concerned Anderson‘s BOOP and was within the scope of his field of expertise.
In regard to his reliance upon and utilization of the principles of his field, Nenno‘s third inquiry, Dr. Miller used a “differential diagnosis,” sometimes referred to as “differential etiolоgy.” This is a clinical process whereby a doctor determines which of several potential diseases or injuries is causing the patient‘s symptoms by ruling out possible causes—by comparing the patient‘s symptoms to symptoms associated with known diseases, conducting physical examinations, collecting data on the patient‘s history and illness, and analyzing that data—until a final diagnosis for proper treatment is reached. See Neal, at 473 n. 3 (quoting Atterbury); Atterbury, 978 S.W.2d at 199-200, 203; Kannankeril v. Terminix Int‘l, Inc., 128 F.3d 802, 807 (3rd Cir.1997). Differential diagnosis is “the basic method of internal medicine” and enjoys widespread acceptance in the medical community. See, e.g., Heller v. Shaw Indus., Inc., 167 F.3d 146, 156 (3rd Cir.1999) (quoting In re Paoli); In re Paoli R.R. Yard PCB Litig., 35 F.3d 717, 755, 758 (3rd Cir.1994). Generally speaking, when properly conducted the technique has important non-judicial uses, is generally accepted as valid by the medical community, and has been subjected to use, peer review, and testing. See Robinson, 923 S.W.2d at 557.
Even with all the advances of medical science, the practice of medicine remains an art. A properly conducted and explained differential diagnosis is not “junk science.” If a differential diagnosis provides a sufficient basis on which to prescribe medical treatment with potential life-or-death consequences, it should be considered reliable enough to assist a fact finder in understanding certain evidence
In answer to Nenno‘s third inquiry, Dr. Miller‘s opinion was based on what the trial court could reasonably have concluded was a properly explained and conducted differential diagnosis, which is in itself a reliable and widely accepted methodology. Thus, we hold that the trial court did not abuse its discretion if it impliedly found Dr. Miller gave a reliable differential diagnosis under Daubert/Robinson/Jordan.25
C. The Limits of What Dr. Miller‘s Differential Diagnosis Can Prove
Our holding that the trial court did not abuse its discretion if it impliedly found Dr. Miller offered a reliable differential diagnosis does not end our inquiry, however. The question remains as to what Dr. Miller‘s differential diagnosis can prove.
The federal courts are split on whether a differential diagnosis, without more, can reliably show both specific and general causation under Daubert in the toxic-tort context. See Heller, 167 F.3d at 154-55 (recognizing disagreement); see generally Sanders at 121 (“Nevertheless, substantial disagreement still remains on what constitutes a reliable differential diagnosis. Two dimensions highlight this disagreement: (1) whether one must ‘rule in’ the putative cause before ‘ruling out’ other causes; and (2) whether temporal order alone—that the cause preceded the effect—is sufficient to support the causal attribution.“); Hon. Harvey Brown, Eight Gates for Expert Witnesses, 36 HOUS. L.REV. 743, 849 (Fall 1999) [hereinafter “Brown-Gates“] (recognizing split); Jack E. Karnes, Establishing the Standard for a Physician‘s Patient Diagnosis Using Scientific Evidence: Dealing with the Split of Authority Amongst the Circuit Courts of Appeal, 15 B.Y.U. J. PUB.L. 1 (2000).
One branch of federal case law indicates that a properly conducted and explained differential diagnosis, by itself or with little else, could sufficiently establish causation for a toxic-tort plaintiff to prevail.26
These courts apparently view a differential diagnosis as establishing both general and specific causation (even if they do not always use those precise terms). See generally Sanders at 124 (discussing and collecting cases). Anderson relies on cases like these.
In contrast, other federal courts indicate that a differential diagnosis does not, by itself, establish causation sufficiently for a toxic-tort plaintiff to prevail. See generally id. at 122-24 (discussing and collecting cases). Rather, these courts also require some type of “hard science” on the issue of general causation (even if they do not always use that precise term), i.e., whether the chemical can cause the illness generally, before allowing in differential-diagnosis testimony.27 They likely impose this re-
At least one Texas court has concluded, in the context of a toxic-tort suit for negligence and product liability, that a doctor‘s differential diagnosis by itself would, at best, be evidence of specific causation only:
Another form of scientific evidence is known as differential diagnosis. This involves a history of the patient and a physical examination, and refers to the process a physician would undertake to eliminate other generally known causes of illnesses and injuries to diagnose a specific cause of a particular patient‘s illness or injury. The Texas Supreme Court has stated, “an expert‘s assertion that a physical examination confirmed causation should not be accepted at face value.” [Havner] at 720. Clearly, an expert‘s recitation that he has examined a patient and has done a history of the patient and has concluded that X caused the patient to suffer with Y would not be sufficient to support causation. If the physician explained the exact methodology that he used in arriving at the conclusion, including discussing the exact other causes that have been ruled out and the generally accepted literature that he relied upon in making that conclusion, the differential diagnosis evidence could be sufficient to prove specific causation. Even though some courts have held that differential diagnosis is a valid form of evidence to support general causation, it most likely is not sufficient under current standards promulgated by the Texas Supreme Court. This statement is made based upon what appears to be the court‘s total reliance on objective evidence and its disdain for any form of subjeсtive analysis.
Atterbury, 978 S.W.2d at 199.28 Although Atterbury was a toxic-tort case, we follow the reasoning of the Atterbury
court and federal cases like it because we believe those cases properly utilize Texas‘s guiding rules and principles regarding the reliability of expert testimony.29 Under Atterbury‘s logic, if it is proven that a chemical generally causes a particular illness (general causation), only then would a properly conducted and explained differential diagnosis be relevant to show that the chemical caused the illness in the plaintiff (specific causation). See id., 978 S.W.2d at 200; accord Raynor v. Merrell Pharms., Inc., 104 F.3d 1371, 1375-76 (D.C.Cir.1997) (holding doctor‘s causation opinion based on differential diagnosis was properly deemed inadmissible, when, among other things, no reliable evidence first proved general causation). This is because a differential diagnosis presumes that chemical X can cause condition Y generally, but does not itself so prove.
Dr. Miller‘s testimony provided nothing outside his differential diagnosis except the temporal proximity of the naphtha fumes to Anderson‘s symptoms. Dr. Miller admitted that he was not a toxicologist, did not know what chemicals comprised naphtha, and had read no literature connecting naphtha and BOOP.30 Although both Dr. Miller and Dr. Wilson testified that the lack of naphtha/BOOP studies did not necessarily preclude a causal relationship, a lack of scientific evidence cannot excuse imposing liability without proof of causation. See Austin, 25 S.W.3d at 292 (citing Havner, 953 S.W.2d at 727-28). Both medical experts further testified that BOOP was idiopathic about a third of the time, with the exception of several identified causes, none of which was known to be naphtha. Accordingly, Dr. Miller‘s differential diagnosis, no matter how reliable the trial court impliedly found it to be, could at most show specific causation. See Atterbury, 978 S.W.2d at 199, 200-01; accord Raynor, 104 F.3d at 1375-76; Cavallo, 892 F.Supp. at 771-72 (excluding expert‘s testimony when supported only by differential diagnosis, but lacking principles and methods of toxicology); see also Sanders at 122-24, 130 (“The opinions that require the [differential diagnosis] expert to ‘rule in before ruling out’ are, in our view, correct.“); Brown-Gates at 849-66. Dr. Miller‘s differential diagnosis merely presumed that nаphtha could be a source of BOOP generally, then eliminated other possible sources of Anderson‘s BOOP until only naphtha was left. Thus, because Dr. Miller‘s diagnosis simply presumed that naphtha could cause BOOP, that diagnosis, without more, would not be reliable to show general causation, i.e., that naphtha can cause BOOP generally. See, e.g., Atterbury, 978 S.W.2d at 199, 200-01.
D. The Result
The very nature of Dr. Miller‘s differential diagnosis would limit that diagnosis to proving specific causation. Furthermore, Anderson failed to meet his burden to show that Dr. Miller‘s diagnosis could also be reliable as to general causation. In the toxic-tort context, a plaintiff must establish general causation for a differential diagnosis to be relevant to show
We note that our dissenting colleagues join the opinion thus far; however, they part ways on the remaining issue of whether the record contains reliable general-causation evidence.
E. The Sufficiency and Reliability of the General Causation Evidence on Which Anderson Relies
In its second issue, Coastal claims there was legally insufficient evidence of medical causation to support the jury‘s verdict. We review the remaining record for sufficient evidence of general causation. We apply the reliability test as articulated in Daubert/Robinson/Jordan in our sufficiency review as well.31 Austin, 25 S.W.3d at 284-87 (citing Havner, 953 S.W.2d at 712).
Anderson argues there was legally sufficient evidence of causation under the Jones Act‘s “featherweight” causation standard. Anderson further argues other evidence in the record constituted legally sufficient evidence of causation. Anderson refers us to “evidence that came from the various doctor‘s [Dr. Brown‘s] reports, the exhibits (particularly the MSDS), and the lay testimony [of timing].”
First, the Jones Act‘s “featherweight” causation standard cannot transform no evidence into some evidence. The proper focus is not on the causation burden of proof, but on whether the expert opinion testimony is reliable in the first place. As noted above, if expert opinion testimony is unreliable, it is no evidence, not even a feather‘s weight. See Havner, 953 S.W.2d at 712, 713 (“The testimony of an expert is generally opinion testimony. Whether it rises to the level of evidence is determined under our rules of evidence, including Rule 702.... If the expert‘s scientific testimony is not reliable, it is not evidence.“).
Second, Anderson did not present Dr. Brown (or his differential-diagnosis notes) as his causation expert, and Dr. Brown‘s notes came in, along with all the medical records, as exhibits to Dr. Miller‘s deposition testimony presented at trial. Even if Dr. Brown‘s differential diagnosis (as stated in the medical records, discharge summary and other notes) could nonetheless be considered expert testimony, it, like Dr. Miller‘s, could show at most specific causation.
Third, the evidence presented here revealed that BOOP has several possible causes and is often idiopathic. General experience and common sense simply do not enable a fair understanding of either specific or general causation under these circumstances. Accordingly, expert testimony was required. Anderson offered no additional expert testimony showing that, generally, naphtha can cause BOOP. Simi-
Put another way, if Anderson had produced only Dr. Brown‘s differential diagnosis (as stated in the medical records, discharge summary, and other notes), the naphtha MSDS, and Dr. Wilson‘s statement that chemical pneumonia can cause BOOP, would he have carried his Daubert/Robinson/Jordan burden? He would not. Cf. Havner, 953 S.W.2d at 717-28 (overturning jury verdict based on various experts’ causation opinions and explaining type of specific, detailed showing needed to carry one‘s burden under Robinson and
Accordingly, the trial court abused its discretion in admitting Dr. Miller‘s specific-causation testimony when the record also lacked general-causation testimony by an expert applying inquiries like those under Daubert/Robinson/Jordan. See Atterbury, 978 S.W.2d at 199–200, 203 (holding toxic-tort plaintiff must prove both specific and general causation to prevail). Thus, there was legally insufficient evidence to support the jury‘s finding that Anderson‘s naphtha exposure “played any part, even the slightest” in causing his BOOP. See Ellis, 971 S.W.2d at 406.
We sustain Coastal‘s first issue. Because we sustain Coastal‘s first issue, we must also sustain its second issue.
Because Coastal‘s first and second issues are dispositive of the appeal, we need not address the remaining issues.
V. Conclusion
The United States Supreme Court, the Supreme Court of Texas, and the Texas Court of Criminal Appeals have repeatedly emphasized that the suggested inquiries to determine the reliability of an expert‘s opinion are to be used flexibly and are not exclusive. Daubert, 509 U.S. at 593-94, 113 S.Ct. at 2797; accord Kumho Tire Co., 526 U.S. at 141-42, 150-51, 119 S.Ct. at 1171, 1175-76; Robinson, 923 S.W.2d at 557; Nenno, 970 S.W.2d at 561.
We emphasize that a trial court may also consider other factors, not previously suggested, that are germane to an expert‘s qualifications and field of expertise in determining the reliability of proffered expert opinion testimony. The “methods of proving reliability will vary, depending upon the field of expertise.” Nenno, 970 S.W.2d at 561. A trial court, “in discharging its duty as gatekeeper must determine how the reliability of particular testimony is to be assessed.” Hernandez, 53 S.W.3d at 752 (citing Gammill, 972 S.W.2d at 726). Trial courts, functioning in their role as gatekeepers, have wide latitude in admitting reliable expert testimony and excluding unreliable expert testimony. We respect the discretion of trial court judges in performing their gatekeeping function and will not disturb their rul
Although we respect the discretion of trial courts in performing their gatekeeping function, we must conclude, in this case, that the trial court abused that discretion in admitting Dr. Miller‘s specific-causation testimony when there was no general-causation testimony by an expert. Thus, there was legally insufficient evidence in this case that exposure to naphtha played any part, “even the slightest,” in causing Anderson‘s BOOP.
We reverse and render judgment in favor of Coastal.
Justice Brister dissented from the panel‘s decision to affirm the trial court‘s judgment.
En banc consideration was requested.
A majority of the Court voted for en banc consideration of the panel‘s decision. See id.
The en banc Court consists of Chief Justice SCHNEIDER and Justices COHEN, MIRABAL, HEDGES, TAFT, NUCHIA, JENNINGS, RADACK, KEYES, BRISTER, WILSON, and SMITH33.
Justice JENNINGS, writing for the majority of the en banc Court, joined by Chief Justice SCHNEIDER and Justices HEDGES, TAFT, NUCHIA, and RADACK. See
Justice BRISTER concurring in the judgment of the en banc Court. See id.
Justice COHEN, joined by Justices MIRABAL and SMITH, joining only sections I through IV(D) of the en banc Court‘s majority opinion and dissenting from the judgment of the en banc Court. See id.
Justices KEYES and WILSON not participating. See id.
SCOTT BRISTER, Justice, concurring.
For the first time since judges were admonished to guard the gate leading to the expert witness stand, this Court must review whether some evidence connects a particular chemical exposure to a particular disease. In Daubert v. Merrell Dow Pharmaceuticals, Inc.1 and Merrell Dow Pharmaceuticals, Inc. v. Havner,2 our highest courts set out in detail the standards we must apply. But the Court balks, choosing instead to follow its own brand-new standards. As an intermediate appellate court, this is not our role. Thus, I write separately.
I. What Daubert and Havner Require
Every court superior to ours (and there are at least three) has adopted a specific list of factors that courts “should consider” when evaluating scientific medical testimony.3 The Court considers these factors only long enough to reject them. It is true these factors may not apply in all cases,
Dr. David Miller was Anderson‘s sole expert witness on causation. He testified that Anderson‘s lung diseasе—bronchiolitis obliterans organizing pneumonia (known by its unfortunate acronym “BOOP“)—was caused by naphtha, even though he did not know the chemicals in naphtha, the level of Anderson‘s exposure, or any medical literature that connected the two. He stated two reasons.
First, he relied on the temporal connection between Anderson‘s exposure and his disease. Such post-hoc-ergo-propter-hoc4 reasoning is sometimes correct, sometimes fallacious. Proximity in time may suggest proximate cause when the harm from exposure is immediate, direct, and obvious, such as coughing, watery eyes, or (in Anderson‘s case) headaches and nausea. But when the alleged harm is cancer, a birth defect, or BOOP—conditions whose development may be delayed, indirect, or largely unknown—something more is required.5
Second, he used a “differential diagnosis,” based partly on medical tests, but mostly on what Anderson told him. The Court finds this “differential diagnosis” reliable. For several reasons, I am not so sure.
First, this was no diagnosis. Differential diagnosis is a “determination of which of two or more diseases with similar symptoms is the one from which the patient is suffering.”6 But there is only one way to diagnose BOOP—a biopsy.7 Dr. Miller‘s process of elimination led him to suspect a generalized pneumonia, but only the biopsy diagnosed Anderson‘s disease as BOOP. Maybe courts should refuse to scrutinize differential diagnoses when they are used “to prescribe medical treatment with potential life-or-death consequences.” But that‘s not what happened here.8
Second, Dr. Miller‘s opinion was critical for something else—Anderson‘s million-dollar claim against his employer.9 To the extent his opinion relied on objective medical tests, this is fair game—let Coastal disprove these if it can. But the opinion
Third, no evidence shows that Dr. Miller‘s reliance upon temporal proximity and a process of elimination is a reliable method used by scientists to establish what causes BOOP, especially when a new “cause” is involved. This is demonstrated by applying the faсtors Daubert and Havner say we “should consider“:
- Testing. One could test whether this methodology is a valid way to find new causes of BOOP, or whether naphtha causes BOOP, but apparently no one has done so;
- Peer review and publication. Neither Dr. Miller‘s methodology nor conclusion have ever been published or reviewed by his peers;12
- Potential rate of error. For the above reasons, this is unknown;
- General acceptance. Without citation to any medical studies, there appears to be no general acceptance of this testimony from other members of the medical community;13 and
- Non-judicial use. As previously mentioned, the primary use of this testimony was Anderson‘s lawsuit—it had no effect on his treatment.
Moreover, the peculiar facts here make a differential diagnosis particularly subjective and unreliable. As noted in Havner, there is a relationship between mathematical percentages and the burden of proof.14 Dr. Miller admitted that the cause in about a third of all BOOP cases was unknown, exceeding the incidence of any other known cause. Thus, even if Anderson had one of the conditions known to be associated with BOOP (say, a viral infection or arthritis), without knowing more it is hard to see how he could prove this cause was “more probable” than all the other unknown causes. A probability smaller than one-third simply cannot also be more probable than one-third.
Finally, in this case there are both unknown and ubiquitous causes, both of which it is impossible to “rule out.” For the former, one cannot develop a checklist of symptoms, exposures, or medical history to exclude them. For the latter, one cannot exclude something that everyone is
Differential diagnoses may sometimes meet the Daubert standards. If the percentage of unknown causes is small, a known cause may well be “more likely.”16 If there are only four causes of a disease, ruling out three may tell us all we need to know. But ruling out three proves little if the number of causes is twenty, or unknown. Because Dr. Miller‘s elimination of some causes in Anderson‘s case cannot tell us (in reasonable probability) the actual cause, it is no evidence of causation, specific or otherwise.17
II. The Court‘s New Differential-Diagnosis Rule
Instead of testing Dr. Miller‘s “differential diagnosis” by the factors Daubert and Havner say we should consider, the Court holds that no differential diagnosis need comply with them. This stretches “flexible” too far.18 Not all fields of expertise follow scientific principles or have peer-reviewed journals, but that is no license to ignore these factors in fields that do.
The Court rejects the Daubert and Havner factors because they are “hard science,” opting instead for a “soft science” approach to differential diagnoses. I may be mistaken, but I believe most scientists that fly on airplanes, go to the doctor, or get sued for a million dollars would expect the science to be pretty “hard.” True, doctors in a clinical setting may sometimes have to guess. Exigencies may require them to try certain treatments before they know what will work. But the Court does not explain why these lower standards make them reliable in court.
Instead, the Court declares a new test—differential diagnoses are admissible if “properly conducted and explained” or “properly relie[d] upon and/or utilize[d].” This is not much of a test. At the least, it is a very subjective one—who is to say what is proper? The Daubert and Havner tests contain objective standards to ensure reliability; the Court‘s test returns us to the days of “flexible” science.19
There is (as the Court notes) considerable disagreement about whether and to what extent differential diagnoses meet the requirements of Daubert and Havner. In part, this is because they come in many varieties and circumstances. For example,
The Court‘s commitment to and analysis of differential diagnoses is impressive, especially as very little of it comes from the parties’ briefs.22 “No one doubts the utility of medical histories in general or the process by which doctors rule out some known causes of disease in order to finalize a diagnosis.”23 But the question is not whether doctors in general ought to use differential diagnoses; the question is whether scientists recognize differential diagnosis as a proper method for determining a new cause of a disease.24 This question ought to be tested by the Daubert and Havner factors, and ought to depend on the facts of each case.
III. The Court‘s New General Causation Rule
But the Court‘s opinion has something to trouble everyone. While defendants may be surprised to learn that differential diagnoses are presumptively reliable, plaintiffs are now informed they must prove both general and specific causation in all toxic tort cases. Neither party asked for this; indeed, they never mention “general causation” in their four briefs. The Texas Supreme Court has never stated such a rule; Havner notes only that plaintiffs “sometimes” offer general causation evidence when they cannot present reliable evidence of specific causation.25 In this case, Anderson made no such offer, because there were no epidemiological studies that would allow him to do so. I would not apply standards to his case that he never attempted to meet.
It is the work of a moment for a defendant to file a no-evidence motion demanding proof of general causation. The Court‘s opinion short-circuits any argument that such proof is not required in every toxic tort case. General causation usually means epidemiological studies—not
Moreover, the term “toxic torts” covers a lot of ground—from asbestos and breast implants to refinery explosions, vaccinations, and food poisoning. There is a logical appeal to requiring every plaintiff to prove that an alleged causation chain can actually occur. But if asbestos fibers are directly found in a plaintiff‘s lungs, or thirty people eating at the same restaurant get sick at once, I hesitate to hold that each of them must prove “general causation” simply because their tort implicates a toxin.
And why limit this proclamation to toxic tort cases? “It would be a mistake to argue that the causal issues in toxic tort cases are fundamentally different from those presented in other tort cases.”27 Why not require plaintiffs to prove general causation in auto accident and slip-and-fall cases, too?
I hope the Court‘s new rule is correct, but it may prove to be very expensive for some litigants if it is not. Without considering the circumstances in all of these cases, and without either party asking us to take such a step, I would not go that far here.
IV. The Dissent and the Documents
The primary issue the parties briefed and argued was whether, even without Dr. Miller‘s testimony, scattered references in the medical records and a product sheet about naphtha were enough to establish causation in this case.28 The dissent would affirm on this basis—having guarded the gate and found Anderson‘s expert wanting, they would permit him to proceed to verdict with documents as his only escort. The majority disagrees, but hardly explains why.
There is no question these documents were admissible; they just were not enough.29 The primary reason is that they cannot independently meet the Daubert and Havner factors that serve as a predicate for reliability. None of the notations in Anderson‘s hospital records indicate the methodology used. None indicate support from medical studies or general acceptance in the medical community. Only one indicates how or why the authоr reached his conclusion, and that one relies only on anecdotal evidence.30 Most do not even
Similarly, the naphtha product safety data sheet states only that overexposure to naphtha can cause (among many other problems) inflammation of the lungs. Because it does not mention BOOP, it provides no information about relative risk, required exposure level, or time of onset.31 This is not enough to prove causation.32
In addition, Anderson‘s argument fails because it violates a rule much older than Daubert—unless medical causation is within the common knowledge of laymen, expert testimony is required.33 There are several reasons why documents cannot replace an expert.
First, none of them are under oath. If Anderson had requested a trial continuance due to health problems, his doctor‘s opinions would have to have been sworn.34 It is hard to believe his doctor‘s opinion on causation—the critical issue supporting his million-dollar verdict—requires something less.
Second, it is too easy to reach the wrong conclusion by picking and choosing parts of a document and using them out of context. Anderson points to several conclusory statements in the medical records that his lung inflammation was caused by his chemical exposure. But he skips over the discharge summary, which relates his shortness of breath to “exposure to Benzine [sic], Toluene, asbestos and naphtha.” As these entries show, hospital records often recite a working diagnosis or a patient‘s version of his medical history; this does not mean they are intended to be independent opinions of causation.35 Nor does the context of such notes indicate they are based on reasonable medical probability.36
Third, Anderson‘s use of these documents shows the wisdom of the rule that bars admission of “learned treatises” in place of expert testimony.37 By applying the reasoning of lawyers to the language of doctors, Anderson says we should adopt the following reasoning:
- certain chemicals (but not naphtha) have been shown to cause lung inflammation that can cause BOOP;
- naphtha can cause lung inflammation;
- therefore, naphtha-related lung inflammation must also cause BOOP.
But according to this reasoning, all chemicals that cause inflammation (and there
If we drop the requirement for an escorting expert, we will soon end up with “science” that scientists can prove wrong. For example, Coastal‘s expert, Dr. Keith Wilson, testified without contradiction that tobacco (for once) is not associated with this lung disease. Of course, tobacco smoke contains chemicals, which undoubtedly can inflame the lungs. Thus, tobacco must cause BOOP—except that it doesn‘t.
Conclusion
Someday, medical science may find that naphtha exposure causes BOOP. But as far as we know now, it is just as likely to find that it does not. This case cannot be indefinitely postponed in the interim. In our system of justice, if a fact cannot be proved one way or the other, the party bearing the burden of proof loses. We cannot be hasty to impose liability when scientifically reliable evidence is unavailable.38
Similarly, someday our highest courts may decide all toxic tort plaintiffs must prove both general and specific causation, and that a proper differential diagnosis always proves the latter but never the former. But unlike this appeal, those questions do not have to be decided today. In our system of justice, courts should answer only the questions before them, and leave broader pronouncements to future cases. We cannot be hasty to impose rules that may require backpedaling later.
For these reasons, I concur in the judgment of the Court.
MURRY B. COHEN, Justice, dissenting.
I join parts I through IV(D) of Justice Jennings‘s opinion for the en banc Court. However, I disagree with part IV(E) of that opinion and thus with the conclusion and judgment. Accordingly, I respectfully dissent.
Sufficiency of Evidence Other Than Dr. Miller‘s Causation Opinion
I agree with the majority that Anderson had to prove causation by expert testimony. Unlike the majority, however, I would hold that Dr. Brown‘s written diagnosis and testimony by Coastal‘s Dr. Wilson, along with the naphtha material safety data sheet (“MSDS“), supplied the general causation link that Dr. Miller‘s opinion lacked.
1. Additional Comments on the Standard of Review
Under the
2. Dr. Brown‘s Opinion
Coastal did not sufficiently object under Robinson and Havner to Dr. Brown‘s medical records;2 thus, Coastal may not now challenge the use of Dr. Brown‘s causation opinions within those records to support general or specific causation. See Maritime Overseas Corp., 971 S.W.2d at 409 (“To preserve a complaint that scientific evidence is unreliable and thus, no evidence, a party must object to the evidence before trial or when the evidence is offered.“).
I set out Dr. Brown‘s initial file note of September 27, 1994 in full:
[Anderson] presented a long history, very carefully given, that he was in a foreign port when they took on a load of naphtha. The fumes were extremely heavy and gagged him, and caused him kind of a respiratory type breathing problem that resulted in some chest pain. He had a hacking cough, which is documented in the communications. He had a diagnosis of tracheobronchitis, which is documented in the communications sent to me.
Here in my office I got a history that he was a long time employee of Reynolds Metals, never any serious illnesses. He had a hernia operation in 1971. There is no history of any on the job illnesses that I know of. Socially, he doesn‘t drink cоffee or tea, and he does not smoke or use tobacco products. Only upon occasion does he drink any alcohol whatsoever. As I listened carefully, the man related that he had been confined to his room and “quarantined” for six days. It got more difficult for him to breathe, and he had progressively more chest pain. He also went on to relate
that they took on a load and that the fumes were very difficult to tolerate and caused a lot of bronchospasm, coughing and chest discomfort. He got to my practice in sort of a circuitous route, in that Dr. Vela here in Corpus Christi was unable to see him, and they wanted somebody who had dealt with [text whited out] in the past. Having dealt with high chain aeromatic hydrocarbons since the early 70‘s, when I was the medical director at Coastal States Gas Producing here in Corpus Christi, I became familiar with the types of pneumonia that this particular product could cause.
Head, eyes, ears, nose and throat revealed a bright red pharynx and bright red ears. This man was using the accessory strap muscles of respiration and appeared quite ill. Otherwise the head, eyes, ears, nose and throat were normal. Ausculation of the lungs revealed that he was barely moving any air at all, and it sounded as if he might have some sort of emphysema or chronic obstructive pulmonary disease. I went on to ask about asbestos, and the only history I got of asbestos was that he had worked at Reynolds Martin for 30 years and had had chest films every year, and that nothing had ever come up abnormal. Today we did an EKG, which revealed a sinus rhythm with a right ventricular conduction delay. He had a pulmonary function testing, which revealed extremely restricted FEV 1 of only about 50% of predicted [illegible] and extremely restricted air flow. A chest x-ray revealed a fleecy peribronchiolar infiltrate around the hilum of the lungs and almost a consolidated pneumonia in the lung bases bilaterally, but more pronounced on thе right than the left. I went back and re-examined the patient and found out that he was actually a little bit more hypoxic than I felt. At this point I felt like I needed to back up [sic] the expertise of the hospital and the pulmonologist.
My impression was that he had an aspiration/chemical type pneumonia secondary to the breathing of a high chain aeromatic hydrocarbon such as naphtha. The history o[whited out] contamination I figured probably would have resulted in a dead patient. Long standing exposure to asbestos, if he had it, and I am not sure he did, would result in markedly different looking chest film, which would be read as asbestosis. At any rate, I felt that the man‘s wellness was in jeopardy and that I needed the support of the hospital and consultation of Dr. David Miller, local pulmonologist. I think the prognosis is guarded at this point.
(Emphasis added.) The discharge summary that Dr. Brown co-signed also states in part as follows:
Patient was admitted to the hospital due to shortness of breath and due to his history of exposure to naphtha from working as a merchant marine. Patient was also exposed to asbestos from working at Reynolds Aluminum Foil Plant locally for 30 years. He was exposed to Naphtha while working as a merchant marine for the past 4 years. Upon admission, a chest x-ray was done which showed diffuse infiltrates in both lungs, most severe in the lower right lobe consistent with pneumonitis3 secondary to chemical exposure. CT scan done with contrast to evaluate interstitial lung disease showed fibrosis in both
lung bases with a predominantly peripheral distribution. Possibilities include usual interstitial pneumonitis secondary to rheumatologic disease, asbestosis is less likely due to the absent [sic] of pleural plaques a condition that can result in this case. Other conditions that can result in basilar fibrosis are scleroderma and chronic aspiration. Repeat chest exam done on the 1st of October 1994, showed a worsening of the right base, preexisting infiltrates and they are still present. Repeat chest exam on the 3rd of October showed unimproved bibasilar pneumonia and no new complications. Repeat on the 5th showed no new complications. Lung biopsy which was performed on the 30th of September 1994, path report shows diagnosis as previously stated. Biopsy was done on the right lower and middle lung biopsy and showed bronchiolitis obliterans, organizing pneumonia [BOOP].
(Emphasis added.) In various other documents, Dr. Brown reiterates in shorthand his diagnosis of BOOP secondary to toxic exposure.4
Contrary to Coastal‘s argument, Dr. Brown‘s diagnostic records are not like those in Burroughs Wellcome Co. v. Crye, 907 S.W.2d 497 (Tex.1995). In Crye, neither a Robinson/Havner nor a
3. Other Evidence of General Causation
Besides Dr. Brown‘s diagnosis, the pathology report comments that multiple conditions can, in general, be “associated with” BOOP, including toxic industrial fumes, drugs, infections, chronic aspiration, collagen vascular disease, bronchial obstruction, and “idiopathic.” It is thus significant that the naphtha MSDS, which federal regulations required Coastal to post on this vessel, states “pneumonitis” is a potential effect of overexposure to naph
For example, federal regulations require an MSDS for “hazardous chemicals,” which are defined in pertinent part as any chemical that is a “health hazard.”
We do not know who compiled this naphtha MSDS or exactly what testing procedures that entity used. It could have been The Coastal Corporation, whose name, address, and phone number appeared at the top of the MSDS, or one of the 17 apparently related corporations also listed there. See
4. Conclusion
The trial judge would not have abused his discretion if he impliedly determined that (1) specific causation was reliably proved by Dr. Miller‘s opinion and (2) general causation was reliably proved by Dr. Brown‘s written diagnosis and Coastal‘s own expert and document.9 Applying the
For these reasons, I respectfully dissent from the en banc Court‘s judgment.
Ricardo PADILLA, Appellant,
v.
COMMISSION FOR LAWYER DISCIPLINE, Appellee.
No. 04-01-00527-CV.
Court of Appeals of Texas, San Antonio.
June 5, 2002.
Rehearing Overruled July 15, 2002.
Notes
Q: I take it then you have to rely almost exclusively then on the history that‘s given to you by the patient in order to make a judgment as to what caused it?
A: Correct
This is not to fault Dr. Miller—no laboratory test could show all the viruses, chemical fumes, or medications Anderson had been exposed to. More telling is the Court‘s fallback position—diagnoses based on what patients say are reliable because there is a hearsay exception for such statements. SeeJoseph Sanders, Julie Machal-Fulks, The Admissibility of Differential Diagnosis Testimony to Prove Causation in Toxic Tort Cases: the Interplay of Adjective and Substantive Law, 64 LAW & CONTEMPORARY PROBLEMS 107, 110-11 (Aut.2001) (citations omitted) (hereinafter “Sanders“]. Indeed, the Court deсlares “[o]ur role is not to determine reliability at all.” But the Supreme Court in Havner stated, “The issue before us, as in most of the previously cited Bendectin cases, is whether the Havners’ evidence is scientifically reliable and thus some evidence to support the judgment in their favor.” Havner, 953 S.W.2d at 711. Apparently, I am not alone in mistaking our role. While I agree we cannot substitute our judgment for that of the trial court, we cannot substitute our judgment for that of the Supreme Court either.Cause-in-fact in toxic tort cases is usually thought of as two separate issues: general causation and specific causation. [Fn. 13: Arguably, these are separate issues in all tort cases. However, the general causation issue is often obvious. That cars striking trees at 60 mph might cause injury to occupants is not a point requiring expert testimony.].... It would be a mistake to argue that causal issues in toxic tort cases are fundamentally different from those presented in other tort cases. However, toxic tort cases do differ in degree in several significant ways. First, often there is causal ambiguity. The level of exposure ... is often uncertain. Evidence of a relationship between the substance and the injury is often uncertain. The timing between the exposure and the disease may be suspect.... Second, there is a fundamental problem of multiple causation.... Other substances [then asbestos], however, do not cause unique injuries, and substances that do cause signature diseases may also cause others.... Third, [p]laintiffs may find it difficult to prove that a particular injury was the result of the defendant‘s substance or another cause.
