OVARY - Dysgerminoma

A coarsely-lobulated tumour mass some 20 x 10 cm; the tumour is largely solid, but it shows an occasional area of necrosis. On the top of the specimen the remnants of ovarian tissue can be recognised.
This young woman presented in her first pregnancy with ruptured membrane at approximately 38 weeks. Labour failed to progress and further examination showed an obstruction which was relieved by removal of this tumour. Histologically, the appearances were those of a dysgerminoma.