Colonoscopy, Intestinal perforation"/>
Colonoscopy is a relatively safe tool for diagnosis and treatment of colorectal disease. But colonic perforation during colonoscopy is a severe complication and sometimes becomes a life-threatening condition. It occurs with a frequency of 0.07% among patients having diagnostic colonoscopy and in up to 0.40% of patients having therapeutic colonoscopy. In these cases, surgical treatment is needed but endoscopic repair and conservative management could reduce the need for immediate operations. Endoscopic clipping has been the principal method for non-operative treatment of iatrogenic colonic perforation, but it has important limitations. One of them is that it is technically difficult to clip when the angle of approach is tangential. Here we report a case of an iatrogenic colonic perforation treated with endoscopic band ligation rather than endoscopic clipping, because of approach difficulties. (Korean J Gastrointest Endosc 2010;41:176-179)