Cytoreductive Surgery plus Hyperthermic Intraperitoneal Chemotherapy Improves Survival with Acceptable Safety for Advanced Ovarian Cancer: A Clinical Study of 100 Patients

Background. The mainstay of treatment for advanced ovarian cancer is debulking surgery followed by chemotherapy that includes carboplatin and paclitaxel, but the prognosis is poor. This study is aimed at evaluating the efficacy and safety of cytoreductive surgery plus hyperthermic intraperitoneal chemotherapy (CRS+HIPEC) as first-line surgical treatment in patients with advanced ovarian cancer (AOC). Methods. FIGO stage III/IV AOC patients underwent CRS+HIPEC as first-line surgical treatment at our center from December 2007 to January 2020. The primary endpoint was survival, and the secondary endpoint was safety. Results. Among 100 patients, the median Karnofsky performance status (KPS) score was 80 (50-100), median peritoneal cancer index (PCI) was 19 (1-39), median completeness of cytoreduction (CC) score was 1 (0-3), number of organ regions removed was 4 (3-9), number of peritoneal regions removed was 4 (1-9), and number of anastomoses was 1 (0-4). The median follow-up was 36.8 months; 75 (75.0%) patients were still alive, and 25 (25.0%) had died. The median overall survival (mOS) was 87.6 (95% CI: 72.1-103.0) months, and the 1-, 2-, 3-, 4-, and 5-year survival rates were 94.1%, 77.2%, 68.2%, 64.2%, and 64.2%, respectively. Univariate analysis showed that better mOS correlated with an age ≤, KPS≥80, ascites≤1000 ml, PCI