Abstract
An 85-year-old man underwent distal gastrectomy with Roux-en-Y reconstruction for gastric cancer. He complained of postoperative nausea and bloating. Because these symptoms persisted, he underwent nasogastric tube insertion for gastric decompression. An abdominal computed tomography scan revealed a mass within the stomach that was confirmed to be a partial jejunal invagination on subsequent gastrointestinal endoscopy. In addition, gastric fluoroscopy showed gastric gastrografin retention. Therefore, we diagnosed the patient with intussusception of the gastrojejunostomy and repeated the surgery because the condition was not resolved with conservative or endoscopic treatment. During the procedure, we observed the invaginated and reducible cecum of the gastrojejunostomy within the stomach. Therefore, we resected this anastomosis site and created another Roux-en-Y anastomosis. Intussusception of the gastrojejunostomy after gastrectomy with Roux-en-Y reconstruction is very rare, but we consider it a serious complication.