title: Granular cell myoblastoma of the sigmoid colon.
abstract: A granular cell myoblastoma of the upper sigmoid colon is reported in a 53-year-old male. The tumor was detected during investigation of abdominal pain and was removed by colonoscopic polypectomy. Colonoscopy provides a new method of treatment for these unusual colonic lesions and avoids the need for surgery. To our knowledge the tumor has not been reported previously in the sigmoid colon.
mesh_terms: D012809:Colon, Sigmoid; D003110:Colonic Neoplasms / Q000473:pathology* / Q000601:surgery; D003113:Colonoscopy; D003593:Cytoplasm / Q000648:ultrastructure; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009379:Neoplasms, Muscle Tissue / Q000473:pathology* / Q000601:surgery