The colonoscope was used on 210 patients. The examination was successful in 197. Technical problems in eight patients, unsatisfactory preparation of the colon in five prevented success. In 69 of these 210, a total of 91 polyps was removed. The only complication encountered was bleeding, which occurred in two patients and did not require laparotomy.
Berci G, Panish J, Morgenstern L. Diagnostic Colonoscopy and Colonoscopic Polypectomy. Arch Surg. 1973;106(6):818-819. doi:10.1001/archsurg.1973.01350180052016