Biliary injury after cholecystectomy in a patient with severe right liver atrophy

We report a case of bile fistula after cholecystectomy in a patient with severe right liver atrophy, which was managed by endoscopic nasobiliary drainage and conservative treatment. The patient was a 76-year-old man with a sudden onset in the right flank and abdominal pain. Computed tomography revealed calculous cholecystitis and severely atrophied right lobe of the liver. Gallbladder was located in the superior-posterior portion of the liver as opposed to the normal position. The patient underwent cholecystectomy and showed massive bleeding and bile leakage at the gallbladder bed during operation. A bile fistula was detected three days after surgery, which was managed by interventional bile drainage. Right liver agenesis or severe atrophy is rare. Additionally, the report of combined bile duct injury after cholecystectomy in these settings is extremely rare.