Endoscopic treatment of a sigmoid perforation caused by an ingested fish bone.

A 68-year-old man was admitted with severe abdominal pain since the previous day. His physical examination was unremarkable, except for mild lower abdominal tenderness without rebound tenderness. Laboratory tests showed he had an elevated white blood cell count (11800 cells/μL) and increased C-reactive protein (CRP) level (105mg/L). A computed tomography (CT) scan revealed a radiodense linear foreign body that was extending transmurally through the wall of the sigmoid colon (▶Fig. 1). Colonoscopy demonstrated a fish bone stuck in the sigmoid colon wall (▶Fig. 2). The fish bone was carefully removed using foreign body forceps, leaving an approximately 0.5 ×0.5-cm perforation in the sigmoid colon wall. The perforation was closed by an over-the-scope clip (OTSC; Ovesco Endoscopy Ag, Germany) (▶Video1). After this endoscopic procedure, the patient’s lower abdominal discomfort immediately disappeared. He was treated with antibiotics for 3 days and was discharged from hospital without any early complications. Ingestion of foreign bodies, such as poultry bones, fish bones, coins, and dentures, is a common occurrence among elderly patients, children, alcoholics, patients with psychiatric disorders, and fast eaters [1]. Most foreign bodies are able to pass through the gastrointestinal tract without consequence, while some may lead to perforation, fistula, hemorrhage, or obstruction of the gastrointestinal tract [2]. Perforation of the sigmoid colon caused by an ingested fish bone is rare. Surgical treatment is usually inevitable if foreign bodies cannot be extracted endoscopically [3]; however, a case where a fish bone-induced sigmoid colonic perforation was successfully treated by conservative management had previously been reported [4]. In our case, the fish bone that had stuck in the wall of the sigmoid colon was successful-