Portal vein cavernous transformation at bilioenteric anastomosis

A 30-year-old woman presented with a 3-year history of recurrent melena,without haematemesis,abdominal pain or fever.The lowest hemoglobin was 30 g/L.She had a history of congenital choledochal cyst and underwent extrahepatic bile duct resection with Roux-en-Y cholangiojejunostomy 26 years ago.