a Kaplan–Meier overall survival curve for patients treated with cytoreductive surgery and hyperthermic intraperitoneal chemoperfusion (n = 65). Median overall survival was 46.2 months, with 1-, 2-, and 5-year overall survival probability of 77, 57, and 39 %, respectively. b Kaplan–Meier curve for time to progression for patients treated with cytoreductive surgery and hyperthermic intraperitoneal chemoperfusion (n = 54). Median progression-free survival was 13.9 months, with 1-, 2-, and 5-year disease failure probability of 47, 68, and 83 %, respectively