Barreta A, et al. - Researchers analyzed and compared the clinicopathologic features and prognosis of clear cell ovarian carcinoma (CCOC) and endometrioid ovarian carcinoma (EOC) associated or not with endometriosis. Researchers performed a reconstituted cohort study at a single-institution Brazilian cancer center including 50 patients with CCOC and EOC diagnosed between 1995 and 2016, followed up until 2017. Outcomes suggest no impact of the presence of coexisting endometriosis on the prognosis of EOC, however, in patients with CCOC, it was associated with better overall survival (OS). The good prognosis was evident for patients with CCOC and EOC at initial stages and EOC at advanced stages. However, patients with CCOC at advanced stages showed a sooner recurrence and shorter OS.