Plaintiff sued defendants for medical malpractice. The trial court directed a verdict in defendants’ favor because the jury could not reasonably infer that defendants’ breach of the standard of care caused plaintiffs injuries. We affirm.
We state the facts in the light most favorable to plaintiff.
Wheeler v. LaViolette,
Plaintiff did not see Pugsley again until March 1994. At that time, plaintiff complained of daily headaches. Pugsley prescribed additional medications and plaintiffs symptoms abated. In November, plaintiff complained of dizziness and sensitivity to light, but those symptoms disappeared in December. In January 1995, plaintiff returned to Pugsley. She reported that the medications were no longer working and that she had a headache more than 50 percent of the time. She also said that the pain she was experiencing was different from the pain associated with her earlier migraines. Pugsley prescribed additional medication, and plaintiff tried physical therapy.
On February 13, 1995, plaintiff reported that she had been listing to one side and feeling disoriented. Pugsley ordered a CT scan, which was performed that day. Dr. Kienzle, a neuroradiologist, analyzed the scan. Because Kienzle concluded that plaintiffs CT scan was normal, he did not order an MRI. Kienzle reported to Pugsley that he did not see any abnormality.
*510 Plaintiffs symptoms worsened. She worked less, and then not at all. In late April and May, plaintiff was unable to care for her children and spent most of her time in bed or resting on the couch. Plaintiff reported vertigo, nausea, frequent vomiting, confusion, sensitivity to light, and disabling pain. Pugsley referred plaintiff to another neurologist, Dr. Lockfeld. Lockfeld treated plaintiff for an inner ear infection. Based on her lack of response to treatment, Lockfeld ordered an MRI in June 1995. That test revealed a three-centimeter tumor at the base of plaintiffs brain. Plaintiff underwent surgery in July, and most of the tumor was removed. Because the tumor was malignant, plaintiff also underwent radiation treatment.
Plaintiff sued Kienzle and Radiology Associates, P.C., claiming that Kienzle had negligently misread the February CT scan. She alleged that, as a result of Kienzle’s negligence, the diagnosis and treatment of the tumor had been delayed approximately 100 days. She also alleged that the delay caused or aggravated various physical and emotional problems during that period. The primary component of her damages claim was for “pain and suffering during the delay, and emotional damages from her fears of recurrence, growth, and spread of the cancer and fears for her long term prognosis.”
Several doctors testified at the trial. Dr. Miller, who performed the surgery, testified that, if the tumor had continued to grow untreated, plaintiff would have died. Lockfeld, plaintiff s neurologist, testified that he would have expected a brain tumor to produce “gradually worsening symptoms rather than episodic symptoms,” as plaintiff had been experiencing. He explained that the symptoms plaintiff exhibited could be indicative of “a growing thing in the brain” but that, before the MRI, that “was not the only item under consideration.” He testified that multiple sclerosis, for instance, could cause the same symptoms. He also said that he was “not certain that that lesion would cause headaches unless it was producing blockage of the fluid, spinal fluid, which apparently it was not.” Dr. Gemmell, who conducted the radiation therapy after surgery, testified that plaintiffs tumor was of a “moderately high proliferative” type, meaning that its cells were multiplying and could spread. Plaintiffs husband *511 testified that plaintiff was “much better” after treatment, although she “still has problems with her balance and whatnot and motor skills.” Plaintiff testified that, after the surgery, she still has a lot of health problems and “can’t walk more than a block” but has had several clear MRIs since her surgery.
At trial, plaintiff sought to recover damages for the four-month period from February 1995, when defendants failed to discover the tumor, to June 1995, when the tumor was diagnosed. She argued primarily that she was entitled to recover damages for both the physical pain and the attendant mental distress that she suffered during that period. Alternatively, she argued that she suffered emotional distress when she learned in June that defendants had failed to diagnose and remove her malignant tumor four months earlier. Although plaintiffs alternative theory sought only emotional distress damages, plaintiff argued that the presence of a growing tumor in her body was a sufficient physical impact to permit recovery of damages for psychic injury alone.
After plaintiff rested, defendants moved for a directed verdict. They argued that plaintiff had failed to prove that she had sustained any physical injury as a result of their alleged negligence. 1 Defendants did not dispute that the jury reasonably could find that plaintiff had suffered physical problems during the four-month period after defendants failed to discover plaintiffs tumor. They argued, however, that plaintiff had failed to introduce any expert testimony to prove that their negligence was the cause of those problems; that is, none of the doctors had testified to a reasonable medical probability that the undiagnosed tumor had caused plaintiffs physical problems. After reviewing the testimony, the trial court ruled: “I think I’m left with no choice but to grant the motion.”
On appeal, plaintiff argues that, under either theory of damages, the evidence was sufficient to send her malpractice claim to the jury. We examine each of plaintiffs theories in turn. Plaintiff argues initially that the jury reasonably
*512
could find that defendants’ failure to discover her tumor resulted in both physical impairment and mental distress during the four-month period following Kienzle’s diagnosis. On that point, plaintiff does not dispute that, as a general rule, a plaintiff in a medical malpractice case must offer expert testimony that, to a reasonable medical probability, the alleged breach of the standard of care caused the plaintiffs injuries.
See Cleland v. Wilcox,
Not every medical case requires expert testimony to establish either the standard of care or causation.
Fieux v. Cardiovascular & Thoracic Clinic, P.C.,
*513
Although plaintiff argues that tumors and their effects on the body are a matter of common knowledge, we agree with the trial court that the issue of causation was a complex medical question that required expert testimony.
See Cleland,
The court explained in
Howerton
that “there is a wide difference between determining whether an injury actually exists and its cause.”
We turn to plaintiffs second theory of damages. Plaintiff notes that there was evidence that, as a result of defendants’ failure to discover the tumor, it remained in her body for four additional months and continued to grow. She argues that, even if she failed to prove that she suffered any physical symptoms as a result of the growing tumor, the mere fact that the tumor was growing constitutes a physical impact that entitles her to recover damages for the emotional distress she experienced on later learning of its presence.
In analyzing plaintiffs argument, it is important to note what she does not argue. Plaintiff does not argue that she is entitled to recover emotional distress damages in the absence of any physical impact; that is, she does not argue
*514
that she comes within any of the three recognized exceptions to the physical impact rule.
See Hammond v. Central Lane Communications Center,
Because plaintiff failed to prove that the tumor caused any of her physical symptoms, her alternative argument necessarily assumes that the tumor, while growing, did not affect her in any tangible way. Similarly, there is no evidence that the tumor grew to any appreciable extent. Rather, the most that the jury could infer from the evidence was that the tumor grew, to some unspecified extent, over the four-month period. That evidence does not constitute a sufficient physical impact to permit plaintiffs claim for emotional distress to go to the jury.
Neither the Supreme Court nor we have sought to define the minimum amount of bodily harm necessary to constitute a physical impact.
See Shoemaker v. Management Recruiters International,
At a minimum, the physical impact rule requires an act or omission that results in some perceptible physical effect on a plaintiff. We need not decide whether more is required to constitute a sufficient physical impact to warrant recovery of emotional distress damages. 4 It is sufficient to say, on the facts of this case, that the mere presence of a growing tumor that had no perceptible effect on plaintiff is not a sufficient physical impact to recover damages for negligently inflicted emotional distress. On this record, the trial court correctly granted defendants’ directed verdict motion.
Affirmed.
Notes
Defendants assumed, for the purposes of their motion, that the jury could find that their failure to discover the tumor in February 1995 fell below the applicable standard of care.
It is the settled rule in Oregon that “ ‘where injuries complained of are of such character as to require skilled and professional persons to determine the cause and extent thereof, the question is one of science and must necessarily be determined by testimony of skilled, professional persons.’ ”
Cleland,
The question in Fieux was whether the physician had breached the applicable standard of care. The question here is whether plaintiffs symptoms were caused by a breach of that standard.
In
Norwest v. Presbyterian Intercommunity Hosp.,
“If there are few causes of action for psychic or emotional harm as such, the reason is not found in objections to monetary damages for harm of that nature. The reason may be found by focusing, not on the nature of the plaintiffs loss, but on the source and scope of the defendant’s liability. This court has recognized common law liability for psychic injury alone when defendant’s conduct was either intentional or equivalently reckless of another’s feelings in a responsible relationship, or when it infringed some legally protected interest apart from causing the claimed distress, even when only negligently. * * * But we have not yet extended liability for ordinary negligence to solely psychic or emotional injury not accompanying any actual or threatened physical harm or any injury to another legally protected interest.”
Id. at 558-59 (footnotes omitted; emphasis added). In explaining that psychic damages may be recovered when there is either actual physical harm or an “injury to another legally protected interest,” the last quoted sentence suggests that the former harm is merely one species (albeit one that occurs most frequently) of an injury to a legally protected interest.
