A 37-year-old woman presented with a gradually enlarging abdominal mass and weight loss over a period of 6 months. On examination, there was a freely mobile, yielding mass in the right hypochondrium. Ultrasonography of the abdomen revealed a large cyst with internal septations abutting the head of the pancreas. The head, body, and tail of the pancreas appeared normal. The hepatobiliary tree also appeared normal. Serum amylase level and liver function test results were normal.