Figure 1

(A) Upper gastrointestinal endoscopy: the pancreatic papilla was swollen (white arrow). (B) Abdominal computed tomography (CT): A cystic lesion located between the descending portion of the duodenum and the head of pancreas (black arrow) and massive effusion signals in the abdominal cavity (white arrow). (C) Abdominal magnetic resonance imaging: A thick-walled cystic lesion with low signal intensity between the second part of the duodenum and the head of pancreas (black arrow), and massive effusion signals in the abdominal cavity (white arrow). (D) Abdominal CT: A well-delineated cystic lesion located between the descending portion of the duodenum and the head of pancreas. This lesion was not enhanced by the administration of an intravenous contrast: gadolinium (black arrow). The gallbladder was enlarged with high density in the bottom of the gallbladder (white arrow).