Central pathology review of early-stage ovarian carcinoma: Description and correlation with follow-up—A study by the Spanish Group for Ovarian Cancer Research (GEICO).

5583 Background: The reported experience with early-stage (FIGO stage I/IIB) ovarian carcinoma (ESOC) is limited. It represents 15% of all diagnosed cases and the impact on prognosis of their different histological subtypes has not been clearly defined. The aim of this study is to analyze the frequency of ESOC histologies and their correlation with follow-up. Methods: A centralized pathological review of ESOC was performed from samples belonging to the GEICO ESOC Registry, which includes 1179 patients. A total of 573 samples from 24 Spanish Hospitals were collected, stained with HE 28:496-594). Results: Thirty-four cases (6%) were excluded after revision. The remaining 539 were classified as following: 130 (24%) high-...