Prognostic value of histological type in stage IV ovarian carcinoma: a retrospective analysis of 223 patients

Background: Patients with FIGO stage IV epithelial ovarian carcinoma have a poor but non-uniform prognosis. This study aimed to compare the survival of patients with serous or endometrioid tumours (S/E) and clear cell or mucinous tumours (non-S/E). Methods: Data for 223 patients who underwent surgery between 1987 and 2010 and were diagnosed by centralized pathology review and were retrospectively analysed. The patients included 169 with S/E tumours and 54 with non-S/E tumours. Results: The median overall survivals (OSs) of the S/E and non-S/E groups were 3.1 and 0.9 years, respectively (P