. Gynécologie : . l'épithélium squameux stratifié.au milieu est l'entrée d'un follicule pileux, dont la suite est vue ci-dessous dans le centre du dessin. Le stroma se compose de tissu conjonctif infiltré avec quelques leucocytes. Il s'agit d'une tumeur solide de grande taille qui préserve toujours un contour ovarien. La coupe transversale montre une substance blanchâtre dense et homogène du tissu conjonctif. Le tissu Oftenthe est adouci par l'infiltration édémateuse des espaces lymphoïdes, qui, au microscope, donne l'apparence de tissu myxomateux. L'édématousouinlation peut être si importante que de former la cagout kystique

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. Gynecology : . ith stratified squamous epithelium.At the middle is the entrance to a hair-follicle, the continuation of which is seen below in the centerof the drawing. The stroma consists of connective tissue infiltrated with a few leukocytes. duces a large solid tumor that always preserves an ovarian contour. Cross-section shows a whitish dense homogeneous connective-tissue substance. Oftenthe tissue is softened by edematous infiltration of the lymph-spaces, which, microscopically, gives the appearance of myxomatous tissue. The edematousinfiltration may be so extensive as to form cystic cavities filled with clearcolorless fluid. Occasionally hemorrhagic areas are seen. 410 GYNECOLOGY Muscle-fibers have been demonstrated by good authorities in these tumors, but their presence is rare. Diffuse fibromata may grow to a very large size. They are characterizedeven when of moderate size by causing ascites, though in what way this isbrought about is not known. Pfannenstiel ascribes the ascites to a chemical. Fig. 161.—Round-cell Sarcoma of the Ovary.Low power. The upper part of the drawing shows the tumor, characterized by its round cellslying close together. There are many blood-vessels scattered through it. The light band is part of acorpus albicans and at the bottom is a small area, of normal ovarian stroma. irritation of the peritoneum. Schauta considers it to be due to pressure andstasis of the blood-vessels of the parametrium. The diffuse fibromata may undergo sarcomatous degeneration. Sarcoma.—Sarcomata of the ovary are rare tumors. They may originateas a malignant growth, or they may represent a degeneration of a fibroma.In about one-fourth of the cases reported they occur bilaterally. They closelyresemble ovarian fibromata, and can often be distinguished from them onlyby the microscope. Ascites is always present, but this is not a special mark NEW GROWTHS 411 of malignity, because it is usually associated with all solid tumors of theovary. The sarcomata have

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