A 74-year-old, type 2 diabetic woman presented to the emergency department with an exacerbation of abdominal pain that had been present for 4 years. The pain was located to the midepigastric area and was associated with early satiety and distension. The patient reported that her symptoms had recently exacerbated and had become associated with gastroesophageal reflux. Physical examination The patient was obese and distended and had a palpable left upper quadrant mass.

The mass was not fixed, and there was no skin discoloration associated with it. Laboratory findings The patient’s complete blood count, liver function panel, amylase level, lipase level, and tumor markers were within normal limits. A CT scan of the abdomen revealed a cystic mass measuring 7.2 cm × 6.5 cm × 6.5 cm in the body and tail of the pancreas with a 9-mm thick wall and a honeycomb appearance. What are the diagnosis…