Preoperative thrombocytosis as a prognostic factor in endometrioid-type endometrial carcinoma.

Background: The impact of preoperative thrombocytosis as a prognostic factor in endometrial carcinoma (EC) remains uncertain and has never been examined in Saudi Arabia.

Objectives: To determine the prevalence of preoperative thrombocytosis (platelet count > 400 000/ μL), and its prognostic significance for clinicopathological factors and survival in Saudi patients with endometrioid-type EC.

Design: A retrospective cross-sectional study from January 2010 to December 2013.

Setting: A referral tertiary healthcare institute.

Patients And Methods: Patients who underwent staging surgery for primary endometrioid-type EC were retrospectively analyzed for perioperative details: age, preoperative platelet count, International Federation of Gynecology and Obstetrics (FIGO) stage, endometrioid grade, recurrence, disease-free survival (DFS) and overall survival (OS). Survival analysis was conducted using Kaplan-Meier estimates and a Cox proportional hazards model.

Main Outcome Measures: Prevalence of preoperative thrombocytosis, DFS and OS.

Results: In 162 patients who met inclusion criteria, the frequency of preoperative thrombocytosis was 8.6% (n=14). Patients with advanced FIGO disease (stages III-IV) and recurrence had significantly higher mean preoperative platelet counts than patients with early FIGO disease (stages I-II) and no recurrence (P=.0080 and P=.0063, respectively). Patients with thrombocytosis had statistically significant higher rates of advanced FIGO stages III-IV disease, unfavorable grades II-III endometrioid histology and recurrence than patients with preoperative platelet counts.