A 34-year-old man presented with a 1-week history of epigastric pain. There was no associated fever, chills, or jaundice. There were no bowel symptoms or weight loss. The patient history revealed that an exploratory laparotomy for abdominal trauma had been performed 15 years ago. He remained well afterwards. On physical examination, a 10-cm firm mass was found at the epigastric region. All blood test results were normal except that the serum amylase level had increased mildly (219 U/L). A plain film abdominal x-ray (Figure 1), and subsequently, a computed tomographic scan (Figure 2) were taken.