Abstract
A 62-year-old male was admitted to our Hospital on Dec. 20, 1991, complaining of right lower abdominal pain. Barium enema demonstrated subpedunculated polypoid lesions in the transverse and sigmoid colons. Colonoscope showed a Yamada type III like polyp with round shape and smooth surface covered with grossly normal colonic mucosa at transverse colon and a Yamada type IV polyp at sigmoid colon. The both polyps were resected successfully by colonoscopic polypectomy, and found to be 8×8×8 mm sized solid tumor covered with normal colonic mucosa from the transverse colon and 13×10×7 mm sized polyp from the sigmoid colon. The histopathological examination of the former revealed leiomyoma of the colon. The 29 cases of colon leiomyoma resected by colonoscopic polypectomy were also discussed from the references in Japan.
