This is an appeal from a judgment of nonsuit in an action for malpractice against the respondents, Los Angeles Tumor Institute and Dr. Johnson, its radiologist, for damages resulting from X-rаy burns allegedly caused by the negligence of defendant doctor in administering X-ray treatments to appellant for papillomae. The nonsuit was granted on two grounds: (1) the evidence failed to show that plaintiff suffered X-ray burns or that respondents were negligent in their treatment; (2) the evidence established without conflict that the action wаs barred by section 340, subdivision 3 of the Code of Civil Procedure.
The evidence did not require a submission to the jury. Prior to consulting defendant Johnson for relief, plaintiff was suffering from pаpillomae on the ball of each foot. The affliction had caused her considerable pain and had not responded to other treatments. Dr. Johnson administеred X-ray therapy to her on three occasions at weekly intervals commencing February 6, 1947. The relationship of physician and patient terminated about six weeks after the last treatment. At that time, according to appellant, those portions of the soles to which the X-rays had been applied were deep red at the center, pink in the circumference of the circle, and it was all tender. In July the area treated started to granulate. To use the words of the appellаnt, it “had the appearance of crystallized fruit,’’ and from that time sloughing of the tissue continued and thereafter small blisters *295 developed over the injured areas and оver the dorsum of each foot. In February, 1948, the appellant was attended by Dr. Pritikin, a chiropodist, who testified that the ball of each foot over a circle one inch and a quarter in diameter was denuded and that there was a colorless exudate from the area such as is seen in burns. The condition did not respond to treatment by Dr. Pritikin аnd appellant was unable to pursue her ordinary occupation from May until October, 1948. Thereafter she received treatment from á dermatologist and the lesiоns on the bottom of her feet healed, leaving sear tissue over the sites of the lesions which appellant testified were sore and which apparently did not havе the same amount of tissue underneath the surface as the balance of the area of her soles.
Dr. Johnson and appellant both testified that the X-rays were аdministered by placing a metal tube with an opening at the outer end three fourths inch in diameter against the bottom of the foot at the site of the papilloma. The bаlance of the foot, according to the doctor, was shielded by a sheath of lead. The unfortunate young woman had no recollection of a leaden shield.
Appellant contends that such evidence was sufficient to warrant submitting the issue to the jury under the doctrine of res ipsa loquitur, relying on
Moore
v.
Steen,
The application of the doctrine of res ipsa loquitur is necessarily limited in the field of malpractice. The courts have applied it in only a restricted class of cases where the layman is able to say as a matter of common knowledge and observation that the consequences of professional treatment were not such as ordinarily would have followed if due care had been exercised.
(Moore
v.
Belt,
Such observatiоn is pertinent to the facts at bar. It cannot be said as a matter of common knowledge that the condition which the plaintiff described which included blisters and sores on the soles and tops of her feet and on her shins was something caused by the negligence of Dr. Johnson. In the absence of expert medical testimony the inference that the condition was proximately caused either by a change in the original condition suffered by plaintiff or by some new trouble having nothing to do with the radiation was just as reasonable. Under such circumstances the res ipsa doctrine is not applicable.
(LaPorte
v.
Houston,
Appellant also urges a reversal on the ground that the court erred in refusing to permit Dr. Pritikin to testify as to his opinion that the injury was an X-ray burn. Conceding the force and soundness of appellant’s argument, it is still the rule that the question whether a person is qualifiеd as an expert is a matter ordinarily addressed to the sound discretion of the trial court, and its ruling on appeal will not be disturbed unless a clear abuse of such discretion is demonstrated.
(Moore
v.
Belt, supra,
532;
Sinz
v.
Owens,
The record herein shows Dr. Pritikin to be a graduate of a school of chiropody; that he was liсensed in California to treat diseases of the feet and thereby permitted to use X-ray treatment; that he had had courses in anatomy, physiology, histology, bacteriology, physiotherapy and X-ray; that he had spent four and one half years in the Navy attached to an X-ray department of a hospital; that he had studied dermatolоgy and skin conditions. However, it was also shown that the witness had not studied the use of X-ray for treatment; had never in his practice administered X-ray treatments therapeuticаlly; only once had he ever had occasion to distinguish between skin conditions arising from X-ray burns and those resulting from the direct application of heat, which was in 1935; he had never treated such a burn; had seen only two eases of X-ray burns in 20 years of practice; his use of X-ray in the Navy was for diagnostic purposes only, the therapeutic work having been performed by another department. There was no evidence introduced of any private study of the subject through attendance at lectures, reаding, or by contact with other men in the field. The trial court’s decision cannot be said to reflect an abuse of discretion.
Agnew
v.
City of Los Angeles,
Appellant assigns as prejudicial error the court’s ruling whereby it forbade her to use a medical textbook in her cross-examination of Dr. Johnson. Inasmuch as such evidence was offered solely for the purpose of impeaching the witness’ prior testimony, it cannot be considered in reviewing the correctness of the judgment of nonsuit. It is therefore not necessary to disсuss the assignment.
In view of the conclusions derived with respect to the primary issue, it will be of no avail to discuss the statute of limitations.
Judgment affirmed.
McComb, J., and Wilson, J., concurred.
A petition for a rehearing was denied March 5, 1951, and appellant’s petition for a hearing by the Supreme Court was denied April 12, 1951. Carter, J., voted for a hearing.
Notes
Examples of its proper application are
Ales
v.
Ryan,
