Fig. 2

Histologic aspects of the ovarian tumors. a (right ovary): the histological image showing ovarian parenchyma infiltrated by a diffuse tumoral proliferation. A focus of endometriosis is shown (Hematoxylin and eosin stain × 100). b: the tumor cells are round to spindle with oval hyperchromatic nuclei and moderate cytological atypia. The tumor stroma showed numerous juxtaposed small arterioles with sometimes hyalinazed walls. Tumor cells surrounded these vessels in a striking whorling pattern (Hematoxylin and eosin stain × 200)