Gynecology . btless the result of theirslow growth. They are, therefore, particularly prone to torsion, especiallywhen associated with pregnancy. On account of their tendency to torsion,they frequently become inflamed and adherent to neighboring organs. Necrosisof the cyst wall, especially when adherent to bladder or rectum, is apt to occur,with consequent fistulous openings into these organs. NEW GROWTHS 345 The cyst content is proteolytic and corrosive, and when discharged intothe abdomen by rupture of the cyst wall is conducive to peritonitis. The teratomata are rare tumors allied in their
Gynecology . btless the result of theirslow growth. They are, therefore, particularly prone to torsion, especiallywhen associated with pregnancy. On account of their tendency to torsion,they frequently become inflamed and adherent to neighboring organs. Necrosisof the cyst wall, especially when adherent to bladder or rectum, is apt to occur,with consequent fistulous openings into these organs. NEW GROWTHS 345 The cyst content is proteolytic and corrosive, and when discharged intothe abdomen by rupture of the cyst wall is conducive to peritonitis. The teratomata are rare tumors allied in their structures to the dermoidsin that all three germinal layers are represented. Unlike the dermoids, however,they are essentially malignant. The tissue elements are mingled indiscrimi-nately, and for the most part represent an embryonal stage of tumors grow rapidly and metastasize freely. They reach a large size, areirregular in contour and solid in consistency, with occasional great cystic cavi-. Fig. 144.—Carcinoma of the power. This illustrates the solid carcinoma of the ovary consisting of alveolar masses of cells growing in the stroma of the ovary. ties. Microscopically, all tissues of the body are found mingled in a lawlessgrowth. Less than 50 cases of teratoma of the ovary are found in the literature. Struma ovarii is a term applied to tumors of the ovary, which in their histo-logic appearance and by the iodin test are proved to be thyroidal in tumors are often malignant, produce ascites, and tend to has been much speculation as to their origin, it being at first supposedthat they represent a metastasis from the thyroid gland tissue. It is now 346 GYNECOLOGY believed that they constitute a special form of teratoma (Pfannenstiel), or thatthey represent malignant degeneration of thyroid tissue included in a dermoidcyst (von Franque). It was formerly thought that dermoid cysts and teratomata represent aform of incom
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