Ovarian Carcinomata.

THE pathology of malignant ovarian tumours is a subject of very considerable complexity and few contributions have been made to elucidate the underlying principles. The recognition of the malignant character of an ovarian tumour is usually relatively simple, but to classify the tumour and to determine its origin often present unsurmountable difficulties. The frequency of primary tumours in the ovary is high, and metastatic ovarian growths are also common. In both cases the mortality is very high, and it is for this reason that the following descriptions have been made in some detail. The tumours can be divided into two main groups :-