Ingestion of a foreign body is not uncommon, but rarely results in perforation of the gastrointestinal tract. The most common sites of perforation are reportedly the narrowest parts of the bowel, and perforation of the right side of the colon is rare. We report herein the case of a 69-year-old man who presented with an 8-week history of right upper abdominal pain. Laboratory data revealed inflammation at the first hospital visit. Computed tomography revealed a hypodense lesion containing a hyperdense foreign body in the abdomen. Intra-abdominal abscess caused by foreign body perforation was diagnosed. After administering antibiotics for 2 weeks, surgery was performed. Symptoms had resulted from perforation of the ascending colon by a fish bone.
Key words: Fish bone -Colon perforationA ccidental ingestion of a foreign body such as a fish or chicken bone is relatively common. In most cases, the ingested foreign body passes through the gastrointestinal tract uneventfully, and perforation of the bowel by the foreign body reportedly occurs in less than 1% of cases.1 The most common sites of perforation are reportedly the narrowest parts of the bowel, at either the ileocecal valve or recto-sigmoid junction, and perforation of the right side of the colon is rare. 2 We report an unusual case involving perforation of the ascending colon by a fish bone.