Abstract
We report a case of appendiceal calculus showing the features of submucosal tumor. A 66-year-old female visited to our center for a detailed examinations of positive fecal occult blood. A submucosal tumor about 3cm in diameter was found in the cecum by colonoscopy and barium enema. Laparoscopy-assisted ileocolostomy was performed and revealed aappendiceal calculus. Appelldiceal calculus with submucosal tumor-like appearance is very rare. Appendiceal calculus must be differentiated from submucosal tumor of the cecum.