**4. Endometrioid ovarian cancer**

Endometrioid ovarian carcinoma (EOVC) is an uncommon subtype of epithelial ovarian carcinoma (EOC) that constitute approximately 10% of all ovarian carcinomas. EOVC tends to present at a younger age and earlier stage, are associated with endometriosis, frequent *CTNNB1* and *PTEN* mutations and a higher frequency of microsatellite instability. Also, both the molecular and histologic makeup of EOVC is analogous to that of endometrioid endometrial carcinoma [6, 16].
