Long-term survival outcome of advanced epithelial ovarian cancer: A single institutional study

Indian J Cancer. Jul-Sep 2021;58(3):342-348. doi: 10.4103/ijc.IJC_165_19.

Abstract

Background: A number of patients with advanced-stage epithelial ovarian cancer do survive beyond 5 years. The long-term follow-up data are limited, especially for the Indian setting. We evaluated the 10-year survival outcome and influencing clinicopathological factors.

Methods: A retrospective analysis of advanced-stage epithelial ovarian cancer patients who underwent primary cytoreductive surgery (PCS) or interval cytoreductive surgery (ICS) from 2005 to 2008 was conducted. Survival analysis was performed with the Kaplan-Meier method, and the Cox proportional hazards model was used for prognostic clinicopathological factors analysis.

Results: Ninety-four patients with a median age of 54.5 (18-79) years were evaluated. The median follow-up period was 11.2 years. The overall survival (OS) rates at 5, 7, and 10 years were 37%, 23%, and 18%, respectively. The median OS (MOS) was 46 (95% confidence interval [CI], 36-55.8) months and progression-free survival (PFS) was 19.5 (15.3-23.6) months. Long-term survival was significantly predicted by R0 resection (complete cytoreduction with no macroscopic residual disease) and PFS >20 months while prolonged PFS was influenced by age ≤55 years and R0 resection. For the R0 resection group, patients who underwent PCS had better overall survival in comparison with ICS [72.1(25.2-119) months vs 47.4 (34.9-59.9)months] on 10 years follow-up but was not significant statistically.

Conclusion: Patients with age ≤55 years, R0 resection, PFS >20 months have a better 10-year survival outcome. Among R0 resection, patients undergoing PCS have clinically a better outcome on 10-year follow-up.

Keywords: 10 years survival; India; epithelial ovarian cancer; ovarian carcinoma.