Peritoneal carcinomatosis of colorectal origin: Impact of ovarian metastases.

Abstract

604 Background: To compare survival and morbidity in women treated by cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (CRS-HIPEC) for colorectal peritoneal carcinomatosis with or without ovarian metastases (OM). Methods: A prospectively maintained database was analyzed to identify women treated by CRS- HIPEC between 2009 and 2015. Results: Among 62 included women, 39 had ovarian metastasis (63%) with comparable PCI (10 vs. 7 p=0.15). OM patients experienced more frequent grade III/IV postoperative morbidity (56.4% vs. 30% p=0.04), and postoperative haemoperitoneum (23.1% vs 4.3% p=0.07) leading to more frequent reoperation (36 vs. 21.7% p=0.2). Among OM patients, 20 (52 %) had undergone ovariectomy previously to CRS-HIPEC procedure. Haemoperitoneum (30% vs 15% p=0.4) and reoperation (45% vs. 26% p=0.2) were more frequent if previous OM resection had been performed as compared to synchronous. The 36-month survival (94.7 % vs 61.7 %) was significantly impaired by OM (p=0.007) and 36- month survival without recurrence was better when ovariectomy was performed during CRS- HIPEC (24 % vs. 5.5%, p=0.4). Conclusions: Survival and morbidity of patients with CRS-HIPEC for colorectal peritoneal carcinomatosis were impaired by the presence of OM and previous OM resection.