Figure 2. Preoperative endoscopic retrograde pancreatography (ERP) and peroral pancreatoscopy. a. ERP shows cystic lesions in the pancreas head (arrowhead) and body (arrow), both of which communicate with the main pancreatic duct. The main pancreatic duct in the pancreas head is slightly dilated. b. Peroral pancreatoscopy reveals a fish egg-like appearance at the orifice of the dilated branch duct in the pancreas head.