Abstract
A total of 89 polyps in 71 cases were polypectomied by endoscopic diathermy method during the period of 2 years and 4 months from September. 1972 to December, 1974 and the following result was obtained.(1) Endoscopic polypectomy is safely indicated for pedu-nculated or sub-pedunculated polyps with the largest dia-meter of smaller than 2. 0cm.(2) It is very important to determine endoscopically wh-ether a polypoid lesion is pedunculated or sessile. Polyp-ectomy is not indicated for sessile polyps which is larger than 1. 0cm in the largest diameter, because most of them are malignant, infiltrating to the submucosa extensively and colectomy is always required.(3) Carbon-ink marking would be advisable for accurate identification of a polypectomied site and subsequent foll-ow up examination.(4) Double contrast barium enema examination which is performed a few months after the polypectomy rarely con-firms a site of it as an ulcer scar.
