This case involves the medical malpractice statute of repose, Maryland Code (1974, 1995 RepLVoL), § 5-109 of the Courts and Judicial Proceedings Article (CJ). We issued the writ of certiorari to review the application, on summary judgment, of that statute in
Edmonds v. Cytology Servs. of Md., Inc.,
*210 I
Understanding the legal issues in the instant matter will be assisted by a preliminary review- of Maryland law. CJ § 5-109(a) (the Act) reads:
“An action for damages for an injury arising out of the rendering of or failure to render professional services by a health care provider, as defined in § 3-2A-01 of this article, shall be filed within the earlier of:
(1) Five years of the time the injury was committed; or
(2) Three years of the date the injury was discovered.”
The triggering events for the running of the alternative periods and the length of the periods have not changed since the Act was first enacted by Chapter 545 of the Acts of 1975. 1 Section 2 of Chapter 545 provided that it “shall apply only to injuries occurring after July 1,1975.”
This Court interpreted “injuries occurring” in § 2 of Chapter 545 in
Hill v. Fitzgerald,
*211
This Court in
Hill
looked to
Oxtoby v. McGowan,
“ ‘The General Assembly obviously was not concerned with invasions of a legally protected interest which do not cause harm in the sense of “loss or detriment in fact....” Restatement (Second) Torts § 7(2) (defining “harm”). The Act is concerned with the invasion of legally protected interests coupled with harm.’ ”
In
Hill
we described the holding of
Oxtoby
to be “that the surgeon’s negligent act, coupled with the harm which resulted from leaving part of a fallopian tube and ovary in the patient, amounted to a legally cognizable wrong and hence a medical injury” which occurred prior to the operative date of the HCMCA.
Under the
Oxtoby-Hill
principle, “[wjhether the original allegedly negligent misdiagnosis of Hill’s condition caused some harm and therefore ‘injury’ prior to July 1, 1975 is a question of fact....”
Hill,
Rejecting in Hill the defendant’s continuing treatment approach to when the injury occurred, we said
“that the words of § 5-109 expressly place an absolute five-year period of limitation on the filing of medical malpractice *212 claims calculated on the basis of when the injury was committed, i.e., the date upon which the allegedly negligent act was first coupled with harm.”
Id.
at 699-700,
Hill
came to this Court on certified questions from the United States District Court for the District of Maryland.
Id.
at 691,
II
The action now before us consists of wrongful death and survival claims against two pathologists and their respective employers.. The claims are brought by Wallace Newton Edmonds, widower and personal representative of Deborah Ann Edmonds, and by their daughter, Amanda Bree Edmonds (Plaintiffs). The pathologists are William J. Jaffurs, M.D. and Myrna Rivera, M.D., and their respective employers are Cytology Services of Maryland, Inc. and Ivan R. Mattei, M.D., P.A. Following waiver by the parties of the health claims arbitration process, the action proceeded in the Circuit Court for Prince George’s County.
As alleged by the Plaintiffs, the general facts are these. Mrs. Edmonds came under the care of Dr. Joseph Murgalo in May 1980. Pap smears taken in the fall of 1981 and the spring of 1982 were “class II.” 2 Dr. Murgalo took a biopsy *213 specimen from the epithelium of Mrs. Edmonds’s cervix which was examined by Dr. Jaffurs. His report of July 19, 1983, diagnosed “severe epithelial dysplasia—epidermoid carcinoma-in-situ.” 3
Dr. Murgalo ordered another cervical biopsy to be performed on Mrs. Edmonds at Prince George’s General Hospital and Medical Center. The pathologist who examined this specimen was Dr. Rivera. She reported on July 28, 1983, a diagnosis of “foci of severe epithelial dysplasia.”
In their answers to interrogatories in this action the Plaintiffs state that two of their experts, Dr. Stanley Burrows of Episcopal Hospital in Philadelphia and Dr. Edward Weiner of Mamaronek, New York, are of the opinion that “defendants Jaffurs and Rivera breached the applicable standards of care by failure to diagnose invasive carcinoma evident in the microscopic slides of the biopsies obtained on July 15,1983 and July 28, 1983.” Dr. Burrows rendered a written report in December 1990, but it is not part of the record.
On August 1,1983, Dr. Murgalo performed a cone biopsy on Mrs. Edmonds that was examined by a pathologist who is not a party to the present action. 4 The August 1, 1983 report on *214 that cone biopsy diagnosed “two minute foci of severe dysplasia. All margins are free—5.” 5
Mrs. Edmonds remained free of medical complaints until August 1988 when her gallbladder was removed. Pain experienced by Mrs. Edmonds during that period was not related to cervical cancer, in the opinion of another of Plaintiffs’ experts, Dr. Thomas S. Rocereto of Haddonfield, New Jersey. On May 1, 1989, Mrs. Edmonds complained to Dr. Murgalo of severe pain in the right buttocks, radiating down the right thigh. Dr. Rocereto is of the view that the spread of the malignant cervical tumor was causing nerve root irritation at this time. Mrs. Edmonds was referred to an orthopedist. On October 17, 1989, a CT scan revealed a mass in Mrs. Edmonds’s right pelvic area. On November 8, 1989, she was diagnosed as having fully differentiated squamous cancer. She underwent radiation and chemotherapy treatments. Mrs. Edmonds died on April 11,1990, at age thirty-four, during her second admission to Georgetown University Hospital. The autopsy report did not reach any conclusion as to the primary site of the cancer.
The instant legal action was filed on April 9, 1993. Drs. Rivera and Mattei moved for summary judgment, attaching as exhibits to their motion the Plaintiffs’ statement of claim, the three pathology reports in 1983, certain Georgetown Hospital records, and the Plaintiffs’ answers to the interrogatories of those defendants. In their supporting memorandum those defendants argued, imprecisely as we have seen in Part I, supra, that “the alleged negligent acts or omissions by the defendants occurred nearly ten years prior to the filing of the Statement of Claim” and consequently, “are time barred, as a matter of law under the [Act].” Dr. Jaffurs and his employer also moved for summary judgment. Their exhibits added no new material. Their memorandum recognized the rule of Hill v. Fitzgerald and argued that the alleged act of misdiagnosis *215 satisfied Hill’s definition of “injury” under the circumstances of this case.
In their opposition to summary judgment the Plaintiffs contended that the injury to Mrs. Edmonds occurred no earlier than May 1,1989. Excerpts from the deposition of Dr. Rocereto supplied the principal material for the Plaintiffs’ factual opposition. In an oral ruling from the bench the circuit court granted summary judgment in favor of the Defendants, without articulating the court’s rationale.
Plaintiffs appealed to the Court of Special Appeals. In a lengthy analysis of the Act, of cases decided under it, and of statutory and decisional law from other states, the Court of Special Appeals concluded that the Act operates in the fashion described in Part I hereof. The court, disclaiming that it was presenting “an exhaustive checklist,” stated that
“the patient could suffer an ‘injury’ as a result of a negligent misdiagnosis, when (1) he or she experiences pain or other manifestation of an injury; (2) the disease advances beyond the point where it was at the time of the misdiagnosis and to a point where (a) it can no longer effectively be treated, (b) it cannot be treated as well or as completely as it could have been at the time of the misdiagnosis, or (c) the treatment would entail expense or detrimental side effects that would not likely have occurred had treatment commenced at the earlier time; or (3) the patient dies.”
Edmonds,
The court then vacated the judgment of the circuit court on the following rationale:
“[Plaintiffs] did not proffer any expert opinion that Ms. Edmonds’s cancer had not spread at any time prior to April 9, 1988 (i.e., the date five years prior to the filing of the claim) or April 11,1985 (i.e., the date five years prior to Ms. Edmonds’s death). But [Defendants] did not advance any evidence, beyond conclusory assertions, to show that Ms. Edmonds’s cancer had advanced during those time periods. Nor do [Defendants] contend that Edmonds suffered any *216 symptoms from the cancer prior to August 1988. Therefore, we conclude that the circuit court erred____”
Id.
at 272,
This Court granted the Defendants’ petitions for certiorari in order to review this application by the Court of Special Appeals of the rule of Hill v. Fitzgerald. Briefs amici have also been filed by the Maryland Association of Defense Trial Counsel and, in response, by the Maryland Trial Lawyers Association.
Ill
The issue in this case is the application of the Act, as construed in Hill, to the facts presented in the record for purposes of the summary judgment motion. Inasmuch as no Defendant argues for applying the Act’s alternative bar of three years from the discovery of injury as a basis for summary judgment, the issue is limited to the operation of the bar against an action filed more than “[f]ive years from the time the injury was committed.” The Defendants contend that the injuries were committed on or immediately after the alleged misdiagnoses of July 1983, while the Plaintiffs contend that the injuries were committed when the cancer caused the radiating leg pain of which Mrs. Edmonds complained to her physician on May 1,1989.
In its application of the Act the Court of Special Appeals considered that the date five years prior to the filing of the Plaintiffs’ action was the earliest date on which the injury could have been committed for a viable survival claim and considered that the date five years prior to Mrs. Edmonds’s death was the earliest date on which the injury could have been committed for a viable wrongful death claim.
Edmonds,
IV
Maryland appellate courts have addressed whether an injury occurred before or after a given date that was critical to a legal determination. Some of these cases have involved undiagnosed conditions, and they shed some light on the resolution of the issue before us.
Johns Hopkins Hosp. v. Lehninger,
The plaintiff in
Dennis v. Blanchfield,
The five-year alternative bar under the Act was involved in
Jones v. Speed,
*219
The plaintiff in
Jones
pled each visit as a separate claim. Moving for summary judgment on all counts based on the Act, the defendant argued that all of the plaintiffs harm proximately resulted from the negligent failure to diagnose in July 1978. In opposition the plaintiff filed the affidavit of a neurological surgeon. It included the opinion that “[e]ach time that Mrs. Jones saw Dr. Speed, a separate medical injury occurred, because of the failure of Dr. Speed, at each of these visits, to detect a progressively worsening and changing medical condition.”
Id.
at 256,
In
Jones
we said flatly that “[cjlaims for damages occurring at an earlier time, and resulting from earlier acts of negligence on the part of the defendant, are effectively barred by [the Act].”
Id.
at 257,
The Defendants place considerable emphasis on
Oxtoby,
V
Hill
holds that “[w]hether the original allegedly negligent misdiagnosis ... caused some harm and therefore ‘injury’ prior to [the critical date] is a question of fact.” 304 Md. at
*221
697,
The biopsy specimens diagnosed by the Defendants in July 1983 actually reflected that Mrs. Edmonds had at least a stage I cervical cancer, meaning a tumor that is confined to the cervix. There is a ten to fifteen percent chance of lymph nodes being involved in stage I tumors. The vast majority of cervical cancers spread locally in the pelvis. Cervical cancer does not have a particular organ to which it readily metastasizes. It can go anywhere, “depending] upon how long the patient has had it.” However, “the probability is [that] clinically [Mrs. Edmonds’s cancer] was confined to the cervix” in July of 1983.
The extent of the invasion in July 1983 could not be measured. The Society of Gynecologic Oncologists states that a tumor that penetrates 3.1 millimeters (from the basement membrane) is a stage IB cervical cancer. Inasmuch as the reports gave Dr. Rocereto no measurement of the invasion, he believes that Mrs. Edmonds should have been treated as a stage IB in July 1983. In cases in which the pathologist cannot state the extent of invasion, Dr. Rocereto’s opinion is that the patient should be treated as having “an invasive carcinoma, not as a microinvasive carcinoma.” The standard of care for stage IB carcinoma of the cervix (and for some stage IAs) is either a radical hysterectomy or complete radiation therapy.
In terms of five-year cure rates and with proper treatment in July 1983 for an invasive cancer, as contrasted with a microinvasion, Mrs. Edmonds would have had a cure rate of between seventy-five and eighty-five percent. In 1989, when her cancer was diagnosed, it was at stage IVB, and her cure rate was zero.
*222 Dr. Rocereto cannot tell where the tumor was in 1984, nor can he tell the stage of Mrs. Edmonds’s disease in 1984. He testified: “I can assume it was the same, hadn’t progressed much. It’s impossible [to tell]. There’s no records that give me any hint at all on that.”
Dr. Rocereto had no opinion as to Mrs. Edmonds’s prognosis in 1985, saying, “I don’t have anything in the clinical picture that I see that tells me whether the cancer is advanced or not at that time.” There is no rule, based on his experience, by which he can work backwards from 1989. He said:
“[C]ancer in one instance may spread rapidly and in other instances may be very slow growing, may lie dormant, so someone that does have a very early stage cancer that’s undetected in one year, five years later may be the same and then suddenly a year later has a lot of discomfort and advancing cancer. It’s one of those things about cancer that we don’t understand completely.”
(Emphasis added).
In a long answer explaining why he did not know whether Mrs. Edmonds’s pelvic nodes were negative or positive at the time of her death, he testified:
“Cervical cancer usually spreads as a continuum, but you can get spread in small volume disease____ With cervical cancer, it doesn’t have to be a big tumor moving to a big tumor moving to a big tumor, in some instances, the disease is early in the cervix and it surprises you. My feeling on this case is she had microscopic—not microinvasion, microscopic cervical cancer at the time the original biopsy was taken____ [T]here obviously was a microscopic tumor present and that tumor may have been spreading all those years as a microscopic disease very slowly, it may have been sitting dormant somewhere. Once it starts spreading, it can hit any organ in its way____”
VI
The decision in this case turns on the nature of microscopic cervical cancer, as revealed by the record. Because the
*223
standard of care calls for surgery or radiation treatment when the condition is diagnosed, the Defendants contend that any delay, and certainly a protracted delay, caused by a misdiagnosis is a harm within the meaning of
Hill.
Ordinarily we would have no disagreement with that assessment in a case, such as
Jones v. Speed,
Here, however, the evidence most favorable to the party opposing summary judgment is that the cancer that allegedly should have been detected in Mrs. Edmonds in July 1983 could remain dormant for as long as five years. The inference most favorable to the plaintiff is that there are no additional adverse consequences if the microscopic tumor remains unchanged. The Defendants have not attempted to demonstrate that Dr. Rocereto’s statement is junk science. Nor did the Defendants develop from him the probability of the undiagnosed condition’s remaining dormant for five years.
Five years from July 1983 would mean that the injury could have been “committed” as late as July 1988 so that the five-year bar under the Act did not operate until July 1993. The instant action was filed in April 1993. Consequently, on this record, the Defendants were not entitled to summary judgment.
In an alternative argument the Defendants submit that, in medical malpractice cases in which it cannot be determined when the injury was committed, the rule should be that the injury is presumed to have been committed when the negligent act or omission occurred, with the burden on the patient to prove when the injury was committed. The argument runs counter to the reasoning supporting our holding in
Newell v. Richards,
In Newell we held that the health care provider has the burden of proving at trial when the injury was discovered, *224 under the Act’s alternative three-year bar. In reaching that conclusion we explained as follows:
“[S]ince unquestionably the health care provider bears the burden of pleading and proving that the action is barred under the five-year provision, we believe the legislature intended a single burden of proof and that the health care provider have the burden of pleading and proving that the claimant’s action is time-barred by either of the two statutory provisions. If a health care provider pleads and proves that an action was filed after five years from the alleged negligent act, the action is time-barred.”
Id.
at 728,
Further, it would not be a responsible exercise of judicial power to distinguish Newell and create an exception to the Oxtoby-Hill analysis. CJ § 5-109 was amended by Chapter 592 of the Acts of 1987 to add subsections (b) through (f). At that time the Act took its present format as subsection (a). Chapter 592 was introduced as an Administration Bill, Senate Bill 225. As introduced the bill would have amended then § 5-109 to measure the five-year provision from the time of “the allegedly wrongful act or omission,” and not from the time “the injury was committed.” This amendment was deleted in the Senate Judicial Proceedings Committee. The report of the committee explained the effect of the committee amendment as follows:
“This amendment strikes language from the bill that would have required the statute of limitations in an action for damages against a health care provider to begin to run at the time of the allegedly wrongful act or omission. The intent of the deleted language was to overturn the decision of the Court of Appeals in Hill v. Fitzgerald,304 Md. 689 [501 A.2d 27 ] (1985). In that case, the court ruled that an *225 ‘injury’ is committed on the date the allegedly negligent act was first coupled with harm.”
The effect of the deletion of the administration proposal was to leave the Act substantially as it read when Hill was decided. The General Assembly was well aware that, under the Act as construed in Hill, there could be a window of time between the negligent act or omission and the resulting harm, and the General Assembly intended that the Act operate in the fashion construed in Hill. The instant case, on the present record, illustrates that window.
JUDGMENT OF THE COURT OF SPECIAL APPEALS AFFIRMED. COSTS TO BE PAID BY THE PETITIONERS.
*226 APPENDIX
Excerpts from Drs. S. A. Cannistra & J.M. Niloff, Cancer of the Uterine Cervix, Vol. 334, No. New England Journal of Medicine 1030 (Apr. 18, 1996).
[[Image here]]
Figure 3. Algorithm for Managing Pap-Smear Findings Suggestive of an Intraepithelial Lesion.
[[Image here]]
Figure 4. Algorithm for Managing Microinvasive or Invasive Disease.
*227 Table 1. Staging of Cervical Cancer. *
Stage I: The tumor is confined to the uterus.
IA Microinvasive disease, with the lesion not grossly visible. †
IB Larger tumor than in stage IA or grossly visible tumor confined to the cervix. ‡
Stage II: The tumor extends beyond the uterus but does not involve the pelvic side wall or lowest third of the vagina.
IIA Involvement of the upper two thirds of the vagina, without lateral extension into the parametrium.
IIB Lateral extension into parametrial tissue.
Stage III: The tumor involves the lowest third of the vagina or the pelvic side wall or causes hydronephrosis.
IIIA Involvement of the lowest third of the vagina.
IIIB Involvement of the pelvic side wall or hydronephrosis.
Stage IV: The tumor demonstrates extensive local infiltration or has spread to a distant site.
IVA Involvement of bladder or rectal mucosa.
rvB Distant metastasis.
Notes
. Chapter 545 of the Acts of 1975, in relevant part, provided:
"An action for damages for an injury arising out of the rendering of or failure to render professional services by a physician shall be filed (1) within five years of the time the injury was committed or (2) within three years of the date when the injury was discovered, whichever is the shorter.”
. We understand this allegation to mean that Mrs. Edmonds had “lesions, known as cervical intraepithelial neoplasia (CIN) [that] are *213 characterized by dysplastic changes confined to the cervical epithelium and showing varying degrees of disorder maturation.” S.A. Cannistra,’ M.D. and J.M. Niloff, M.D., Cancer of the Uterine Cervix, 334 New Eng.J.Med. 1030, 1030 (Apr. 18, 1996) (footnote omitted). "CIN II and III are intraepithelial lesions that have the potential for progressing to invasive cervical cancer.” Id. Figures and a table from Cancer of the Uterine Cervix outlining the management of pap-smear findings, the stages of cervical cancer, and the treatment of the various stages are set forth in an appendix at the end of this opinion (Appendix).
. Severe dysplasia and carcinoma in situ are included in CIN III. See K. Nasiell, M.D., M. Nasiell, M.D. & V. Vaclavinková, M.D., Behavior of Moderate Cervical Dysplasia During Long-Term Follow Up, 61 Am.J.Obstetrics & Gynecology 609, 609 & n.* (May 1983). It appears that CIN III is not considered to be a microinvasive or invasive lesion or a stage of cervical cancer. See Appendix, Figure 3 and Table 1.
. Apparently, the cone specimen did not reveal any cancer when that specimen was later examined by experts engaged by the Plaintiffs.
. We have not found anywhere in the record the significance, if any, of "5” in the August 1, 1983 report.
. The Court of Special Appeals used April 9, 1988, for the survival claim and April 11, 1985, for the wrongful death claim. Query: Should these dates be April 8, 1988, and April 10, 1985, respectively? See Md.Code (1975, 1995 Repl.Vol.), Art. 94, § 2, dealing with the computation of time.
. In
Geisz,
. The negligence in Newell was administering excessive radiation in the treatment of a cancer. In such a case the harm is contemporaneous with the negligence. Consequently, on the facts of the case, one could speak of a bar measured by five years "from the alleged negligent act.”
Based on the staging system established by the International Federation of Gynecology and Obstetrics. Staging may be based on information obtained from a pelvic examination performed while the patient is under anesthesia, intravenous pyelography, cystoscopy, and proctoscopy. The stage is determined clinically and does not change on the basis of findings at the time of surgery.
Microinvasive disease is defined as a lesion not exceeding 5 mm in depth from the basement membrane and no wider than 7 mm. A recent distinction has been made between stage IA1 (< 3 mm deep and < 7mm wide) and stage IA2 (> 3 mm but < 5 mm deep and < 7 mm wide). The Society of Gynecologic Oncologists defines microinvasive disease as a lesion < 3 mm in depth beneath the basement membrane, without evidence of involvement of the lymphovascular space.
A recent distinction has been made between stage IB1 lesions (< 4 cm in diameter) and stage IB2 lesions (> 4 cm in diameter). (Footnotes omitted).
