Abstract
A duodenocolic fistula caused by colon-diverticulum is rarely reported. We experienced such a case of fistula, which was diagnosed with symptoms of gastro-duodenal ulcer, as a turning point. The patient was a 71-year-old man who also had symptoms of gastro-duodenal ulcer 4 years earlier. He was afebrile, but his CRP and white cell count were high in the laboratory examination. Abdominal CT showed a tumor-like and abscess-like lesion at the ascending colon, and edematous hypertrophy of the descending duodenal wall. Abdominal CT 6 months before on admission also had revealed the same findings. Upper and lower barium examination revealed a fistula of the descending duodenum and the ascending colon, which seemed to communicate with each other. Upper and lower endoscope examinations showed no tumor, but there was colon oppression from the outside. The fistula, ascending colon, and partial duodenal wall were resected surgically. Pathological findings revealed no malignant lesion, and it seemed that the fistula was possibly caused by inflammation and the abscess induced from the diverticulum.
