A 63-year-old man was admitted to the hospital because of epigastric discomfort. High grade anemia was evident in his laboratory data (Hb 8.1g/dl). Gastroscopy reveale an ulcer lesion like a Borrmann 3 type carcinoma in the posterior wall of the upper body of the stomach and biopsy specimens showed moderately differentiated adenocarcinoma group 5. barium enema study showed an irregular filing defect looked like an apple-core at the transverse colon and fistulas formation to the stomach and jejunum. We diagnosed the patient as having colonic carcinoma with gastrocolic and jejunocolic fistulas and performed an curative operation. Intraoperative findings revealed H0P0N2 for the carcinoma and infiltration into the pancreas as well as those fistulas. The surgical stumps showed negative involvement and n0, and operation resulted in curability A.