There is, however, no question that malignancy lurks in many ovarian cystomata which present to the naked eye an innocent appearance.
The patient recovers promptly from the operation for their removal, but dies a few months later from cancer of the peritoneum or of other organs. Every ovariotomist has met with such examples. In one of my own cases, in which not the slightest sign of malignancy was apparent, the patient wholly recovered from the operation. Shortly after her convalescence an effusion took place in the right pleural cavity. The chest was tapped three times before her death, which was due to cancer of the liver and of the broad ligament at the site of the ablated ovary. In my first case of ovariotomy, one in which the clamp was used, menstruation took place regularly for several months from the cicatrix, which within a year became affected with cancer.
Both ovaries are usually involved in cysto-carcinoma, and this fact should be borne in mind in making a diagnosis. From the marvellous changes often produced progressively in the epithelial linings of ovarian cysts, by which they are transformed into tufts of villous cancer, Tait inclines to the opinion that their growth is associated with a tendency toward malignancy. He believes that tapping hastens on this degeneration, and that after an accidental rupture of such a cyst the peritoneum will be found studded with patches of papillary cancer. Hence he argues that ovarian cysts should never be tapped, and that they should be removed in the earlier stages of their existence, before these malignant transformations have taken place.18
18 Op. cit., p. 148.
DIAGNOSIS.—Since, as has been shown, this cannot always be made out, even by the eye, after the removal of the cysts, it follows that in a large proportion of cases the malignant character of the degeneration cannot be recognized. There are, however, certain symptoms pointing to malignancy which will often throw much light. These, in the order of their frequency, are—
| (a) | The presence of ascitic fluid or of oedema of the lower extremities when the tumor is too small to produce such pressure symptoms. |
| (b) | General cachexia, rapid emaciation, and grave constitutional disturbance out of all proportion to the size of the tumor. |
| (c) | The hardness and solidity of the tumor, together with its nodulous and irregular surface. |
| (d) | The concurrent development of two ovarian growths. |
| (e) | The retraction and burying of the cervix in the vaginal vault. |
| (f) | Pain in stabs, starting from the groin and running down the inside of the thigh. But pain is not a trustworthy symptom, as it is often absent, especially in cysto-carcinoma, and may be caused by benign growths as well. |
TREATMENT.—Whenever no doubt exists as to the malignancy of an ovarian growth, an operation looking to its removal should not be urged by the physician. On the other hand, since a positive diagnosis on this point is rarely attained, and since cancer of the ovary tends for a long time to remain localized, whenever a suspicion of malignancy exists ovariotomy should be performed early, before adhesions have been contracted with neighboring structures. In such a case I should incline to burn off the pedicle in preference to using the ligature.
In those cases in which, on account of adhesions, no operation is justifiable, palliative treatment can alone be resorted to. This comprises the removal of the ascitic fluid or the contents of the cyst by the aspirator whenever the pressure becomes uncomfortable. Symptoms should be treated, and, that of pain being the most urgent, opium will be needed up to the last in increasing doses.
Dermoid Cyst, or Piliferous Cyst of the Ovary.
A dermoid cyst is a congenital tumor having a wall composed of elements like true skin, with its appendages of hairs, sebaceous glands, etc., and contains teeth, hair, bone, cartilage, muscle, and a cheesy material very like vernix caseosa. These cysts are solitary, two never being found in the same person, and, further, they are always unilocular. They are either external or internal—that is, they affect either the surface of the body or else the cavities of the body, as "under the tongue, in the pharynx, oesophagus, cranial cavity, peritoneal cavity, lung, ovary, testis, bladder, and kidney."19 No tumors are more curious, and none are more puzzling to explain. The theories accounting for their origin are very remarkable, and are as follows: Excess of formative nisus. Parthenogenesis, or virgin birth; that is to say, imperfect imitation of transmitted fertility—a property peculiar to many insects, by which, without any renewal of fertilization, successive generations of procreating individuals start from a single ovum. Inclusion of abnormal structures, where there is a dipping in of the epiblast to meet the hypoblast during foetal life, and the pinching off of the same. Foetus in foetu—viz. the inclusion of an imperfectly developed ovum within another which matures perfectly. Hypererchesis; which means that "the ovum has in it the origin-buds of certain tissues, which under exceptional hypererchetic action may go on to the rudimental formation of these tissues without a fusion with the male germ."20 According to Elsner, who has written last on this subject, and to whom I am indebted for much information, "dermoids occur externally and internally in places where the epiblast dips down to meet the hypoblast, and where by processes of grooved involution new bodies are formed, such being, first in order, the testicle and ovary, and that they are therefore all (without exception) embryonal in their first structure."