• Aras Emre Canda, Cigdem Arslan, Cem Terzi, Selman Sokmen, Tugba Yavuzsen, Sevda Ozkardesler, Mehtat Unlu, Funda Obuz, and Mehmet Fuzun.
• Department of Surgery, Dokuz Eylul University School of Medicine, Balcova, 35340, Izmir, Turkey. emre.canda@deu.edu.tr.
• World J Surg Oncol. 2018 Mar 27; 16 (1): 70.

BackgroundDiagnosis of peritoneal carcinomatosis (PC) may be missed by preoperative imaging. We are presenting our experience with incidentally detected PC of colorectal origin treated with cytoreductive surgery (CRS) and intraperitoneal chemotherapy (IPC) at the same operation.MethodsBetween January 2010 and September 2016, 19 patients underwent CRS and IPC due to incidentally detected PC of colorectal origin. Data were analyzed from a prospectively collected database.ResultsThe median age was 59 (29-78). In three patients, PC was diagnosed during emergency surgery. The primary tumor was located in the rectum (three patients; one with recurrent disease), left colon (9 patients), and right colon (7 patients). All patients underwent CRS and IPC, and one patient operated laparoscopically. Median peritoneal cancer index (PCI) was 5 (range, 3-14), and complete cytoreduction (CC-0) was achieved in 14 patients. After CRS, 8 patients received early postoperative intraperitoneal chemotherapy (EPIC), 7 patients received hyperthermic intraperitoneal chemotherapy (HIPEC), and 4 patients received both HIPEC and EPIC. The median hospital stay was 9 (6-29) days. Postoperative complications occurred in 6 patients. There was no postoperative mortality. Median follow-up was 40.2 (12-94) months. Five-year overall survival was 63.2%. Estimated mean survival time is longer in patients who underwent complete cytoreduction compared to patients having CC-1 or CC-2 cytoreduction (87.7 vs. 20.3 months; p < 0.001).ConclusionCytoreductive surgery and IPC can be performed safely in patients with intraoperatively detected incidental PC of colorectal origin.

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