Cancer Of The Ovary occurs mostly as a Cyst with cancerous growths in its walls. There may be a combination of the colloid or papillomatous cyst with cancer, or a partial transformation of the former into the latter. In the ordinary ovarian cyst the epithelium has a regular and normal arrangement, and we may call the tumour in that aspect an adenoma; in the cancer the epithelium is distinctly abnormal in its arrangement, being aggregated into indefinite masses. It may happen that in the midst of the cancer the epithelium is undergoing metamorphosis, so that cysts are developing from it as from the more regular granular tissue.

Besides these cancerous cysts we may have a Solid cancerous tumour in the ovary, presenting the usual characters, but, like the ovarian tumours, showing a very excessive growth.

Fig. 465. - Hair in its follicle with sebaceous gland, from wall of same cyst as the former figure, x '20.