This case reports an application of conventional duodenoscope in a post pancreaticoduodenectomy patient with the help of retrieval balloon assisted enterography. The 56-year-old woman had pancreaticoduodenectomy with Child reconstruction 9 mo ago because of pancreatic adenocarcinoma and now there are recurrent enlarged lymph nodes in the anastomotic stoma of hepaticojejunostomy. Considering the patient's late-stage cancer, a plastic stent was then successfully placed there to drainage. The main challenge in this case was the extremely long afferent loop and blind cannulation through the anastomotic stoma of hepaticojejunostomy. Retrieval balloon assisted enterography is very helpful for duodenoscope going through the reconstructed intestinal tract and for the cannulation. After two weeks, the patient remained free of painful symptoms and free of fever. Liver function improved well. Four months after the placement of stent, the patient died of cachexia without jaundice, fever and abdominal pain according to her daughter's statement.
Keywords: Duodenoscope; Endoscopic retrograde cholangiopancreatography; Pancreaticoduodenectomy; Retrieval-balloon-assisted enterography.