Figure 1

Imaging examinations. MRI showed enlargement of the pancreas body and tail with poor enhancement after gadolinium injection. Some enlarged peripancreatic lymph nodes were noted (A, B). Abdominal CT revealed diffuse enlargement of the pancreas body and tail, which appeared to be hypoattenuated with an unclear margin. A mass measuring 5.2 × 4.8 × 4.1 cm with probable encasement of the splenic vein was observed in the enlarged pancreas on contrast-enhanced CT (C, D). None of the imaging examinations revealed abnormal findings in the liver. The main pancreatic duct, common bile duct, and intrahepatic bile ducts were normal on endoscopic retrograde cholangiopancreatography (E).