SUMMARY
Objective. To improve surgical tactics in peritonitis, caused by complicated course of colorectal cancer.Materials and methods. Through the 2017 - 2020 yrs period in Department of Surgery in Brovary Multidisciplinary Clinical Hospital 18 patients with colorectal cancer, complicated by peritonitis, were operated. Among them there were 14 (77.8%) men and 4 (22.2%) women, ageing in spectrum 42 – 83 yrs old. In 12 (66.7%) patients the cancer of Stage III was diagnosed, while in 6 (33.3%) – Stage ?V.Results. The right-sided hemicolectomy was performed in 22.2% of the patients, resection of transverse colon – in 3 (16.7%), a left-sided hemicolectomy – 1 (5.6%), Hartmann operation – 9 (50.0%), subtotal colectomy – 1 (5.6%). All the operations were performed without formation of primary anastomoses, and with stoma construction in proximal part of intestine. Reoperation were performed in 4 (22.2%) patients. There were 3 (16.7%) postoperative deaths – in patients with the cancer Stage IV, peritonitis in a terminal stage – due to development of the polyorgan insufficiency syndrome.Conclusion. Formation of primary interintestinal anastomoses while doing surgical intervention for colorectal cancer, complicated by peritonitis, is contraindicated because of high risk of the sutures insufficiency presence.