Over 400 gastrointestinal fiberendoscopic procedures and 72 gastrointestinal polypectomies via the fiberendoscope using an electrosurgical-snare technique have been performed without significant complications. Colonic polyps were excised from the sigmoid, descending, transverse, and right colon, and ranged in size from 0.5 cm to 3.5 cm. Gastric polyps were excised from the body, antrum, and prepyloric regions, and ranged in size from 1.2 cm to 3.5 cm. All excised polyps from stomach and colon were histologically benign. Fiberendoscopy of the upper and lower gastrointestinal tract is proving to be diagnostically more accurate than contrast barium x-ray examination in identifying gastrointestinal polyps. Fiberendoscopic removal of polyps is an effective method of treatment that avoids the significant patient risk, discomfort, and inconvenience of major surgery and is more economical for the patient.