Perioperative outcomes of cytoreductive surgery for tumours of colorectal or appendiceal origin with ovarian involvement

Background and Objectives Ovarian metastases (OM) are a common site for metastases in gastrointestinal tumours with peritoneal disease. This study aimed to evaluate perioperative complications between patients with and without OM following cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) for appendiceal/colorectal cancer. Methods Female patients undergoing CRS ± HIPEC for appendiceal/colorectal tumours at a single centre from 2009 to 2020 were analysed. Patients were grouped according to presence or absence of OM at the time of CRS. Results The study included 318 patients, 72 (22.6%) had OM. Operation duration was longer for patients with OM (332 vs. 276 min, p