Abstract
Afferent loop obstruction is a rare complication after gastrectomy. If diagnosis is delayed or conservative treatment is adopted, the outcome is often fatal. A 65 year-old man who had a history of Billoth II gastrectomy for duodenal ulcer was admitted because of abdominal pain, vomiting and icterus. Ultrasonography and CT showed dilated afferent loop and dilated intrahepatic bile duct. We diagnosed it as afferent loop obstruction. We tried to treat the patient by endoscopy. Endoscopy could pass the stricture of the afferent loop by attaching a transparent cap to the tip. We could drain a large amount of biliary fluid through endoscopic channel, and indwell a 6.0 Fr drainage catheter. These treatments were successful and the patient is doing well without recurrence.