Although surgery is traditionally the first choice for the treatment of afferent loop syndrome, there has been an increase in endoscopic treatment in recent years. Here, we report the case of a 68-year-old patient who had undergone pancreaticoduodenectomy and subsequently visited the doctor for abdominal distension. Computed tomography revealed intestinal and bile duct dilatation, and the patient was referred to our hospital. The patient was diagnosed with afferent loop syndrome and acute cholangitis. A short single-balloon endoscope was inserted into the choledocojejunostomy site. A metal stent was successfully deployed for intestinal stricture. After treatment, the afferent loop syndrome and cholangitis improved. Using short single-balloon endoscope, we were able to safely perform this treatment without adverse events.
