[Experiences with intraoperative colonoscopy in patient protocols in 2,547 cases].

Technique and indications for intraoperative colonoscopy are reviewed. A total retrograde fiberoptic colonoscopy was performed on the unopened bowel at laparotomy in 1135 patients, and a partial colonoscopy (70 to 90 cm) in 1412 patients. Additional polyps were found in 24% of patients with carcinoma of the rectum and colon (n = 1023), in 26% of patients with diverticulitis (n = 112), and 8.3% of patients with proctological diseases (n = 1412). A second carcinoma was found in 3.1% of cases with colonic carcinoma, in 1.8% of cases with diverticulitis, and 0.35% of cases with proctological diseases.