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Objective The impact of ‘standard full-staged radical surgery (SRS)’ on overall survival (OS) in elderly patients with early-stage epithelial ovarian cancer (EOC) remains unclear. In the current study, we investigated the impact of SRS on OS in elderly patients with early-stage EOC in a multicentric analysis using a propensity score (PS)-matching technique. Methods Between 1986 and 2017, 3227 patients with EOC were registered and accumulated by the Tokai Ovarian Tumor Study Group, consisting of 14 collaborating institutions, after a central pathological review. Among them, 204 elderly patients aged older than or equal to 65 years who had a stage I EOC were analyzed, including 72 patients who had received SRS (Group I) and 132 who had undergone non-SRS limited surgery (Group II). Oncologic outcomes were compared between the two groups using a PS-matching technique to adjust for various clinicopathologic risk factors. Results The median follow-up duration of all surviving patients was 55.9 months. Consequently, 54 patients (26.5%) developed recurrence. In addition, 33 patients (16.2%) died of the disease. In the original cohort, the 5-year OS rates of Groups I and II were 95.8 and 82.3%, respectively. We identified a marginally significant difference between the two groups (Log-rank: P = 0.086). In the PS-matched cohort after adjustment for multiple clinicopathologic factors, there was no significant difference in OS between the two groups [OS (Group I vs. II), HR: 0.766 (95% CI: 0.271–2.165), P = 0.615]. Conclusions After adjustment for clinicopathologic factors, non-SRS limited surgery may not worsen the oncologic outcome in elderly women with early-stage EOC. A large-scale clinical study is necessary to validate the findings.

Is standard radical surgery necessary for elderly patients with early-stage epithelial ovarian carcinoma? ~Propensity score matched analysis~