Treatise on gynæcology : medical and surgical . tissue, and the vagina lastor not at all. 4. Vaginal Form.—This is far more unusual than the others, be-gins in the posterior cul-de-sac as certain cancers of the tongue startfrom the floor of the mouth, and invades equally the cervix and theadjacent portions df the vagina, producing extensive ulcerations. 336 CLINICAL AND OPERATIVE GYNAECOLOGY, Histological Varieties.—The three kinds which are most oftenfound are: (1) Pavement epithelioma; (2) cylindrical epithelioma; (3)carcinoma or atypical epithelioma. In France, since the writings ofCh. Robi
Treatise on gynæcology : medical and surgical . tissue, and the vagina lastor not at all. 4. Vaginal Form.—This is far more unusual than the others, be-gins in the posterior cul-de-sac as certain cancers of the tongue startfrom the floor of the mouth, and invades equally the cervix and theadjacent portions df the vagina, producing extensive ulcerations. 336 CLINICAL AND OPERATIVE GYNAECOLOGY, Histological Varieties.—The three kinds which are most oftenfound are: (1) Pavement epithelioma; (2) cylindrical epithelioma; (3)carcinoma or atypical epithelioma. In France, since the writings ofCh. Robin, Cornil, and Malassez, the epithelial origin of cancer is themost favored doctrine, and carcinoma is considered as an alveolar epi-thelioma, a particular kind, an evolutionary stage of epithelioma,and not as a neoplasm developed from the first at the expense of theconnective-tissue Pavement epithelioma, lobulated or tubulated, is seldom general,though Virchow has observed it. The cylindrical form has the mostfrequent Fig. 170.—Cylindrical Epithelioma prom the Upper Part of the Cervis, Invading the Fundus(x 150.) m, 3, Hypertrophied glands of the body of the uterus, like those of chronic metritis; t, enlargedglandular cavity, the walls showing many layers of epithelium; e, adjacent gland wall, in a similar state;v, vessels; c, connective tissue (Cornil). Pavement epithelioma is often found in the superficial forms,papillary and vaginal; the variety called lobulated is formed by cel-lular masses which separate the still bundles, andwhich may undergo either a mucous or corneous change. Tubu-lated cancers are formed of cylinders stuffed full of epithelial cellswhich anastomose and penetrate between the muscular trabeculethat still resist the invasion, and on section we see in the lumen ofsuch tubes pavement cells becoming cubical and others deformed bypressure. Cylindrical epithelioma is usually the form which begins in thecervix and s
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