The pathological assessment of ovarian neoplasms V: The germ cell tumours.

All neoplasms of the ovary encountered in a 25-yr study period of King George V Memorial Hospital were classified according to the World Health Organisation (WHO) Histological Classification of Ovarian Tumours. Of just fewer than 1700 tumours, 467 fell into the category designated as germ cell tumours: 4 dysgerminomas, one endodermal sinus tumour, one primary choriocarcinoma, 6 immature and 454 mature teratomas and one mixed malignant germ cell tumour. Two additional cases of gonadoblastoma with associated dysgerminoma were encountered and included for discussion. A detailed histological assessment is presented and the major clinical correlates are documented.