Background: In the surgical treatment of colorectal cancers, disease-free survival and life expectancy are inversely proportional to the increase in complications. We evaluated the superiority of colonoscopy and air and water tests in detecting anastomotic leaks in sigmoid and rectosigmoid junction colon cancers. Methods: Data of patients who underwent robotic/laparoscopic surgical procedures for sigmoid and rectosigmoid junctional colon cancers at a single center between January 2018 and February 24 were retrospectively evaluated. The anastomoses were evaluated by intraoperative colonoscopy (IOC) and intraoperative air leak test (IALT), and two groups were formed. Intraoperative leaks, intraoperative repair techniques, and postoperative anastomotic leaks were evaluated. Results: In our study, there were 125 patients in the IOC group and 148 patients in the IALT group, totaling 273 patients. Leakage was detected in 7 patients (4.7%) in the IALT group and 14 patients (11.2%) in the IOC group (P = .06). In the IALT group, 5 of 7 patients were repaired primary, and the anastomosis was reconstructed in 2 patients. In the IOC group, 10 of 14 patients were repaired primary, 2 patients underwent reanastomosis, and 2 patients needed colostomy. Of these 15 patients with postoperative leakage, 4 had intraoperative leakage (2 patients in the IALT group and 2 patients in the IOC group), and all of them underwent primary repair. Conclusion: In the anastomotic evaluation of sigmoid colon and rectosigmoid junction tumors, we found that IOC detected more leaks than IALT, but in these leaks, reanastomosis and/or diversion ostomy was superior to primary repair.
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