Internal Pancreatic Fistula with Pleural Effusion Showing Elevated Levels of Amylase That Emerged 29 Years after Abdominal Surgery.

A 65-year-old woman presented to a hospital with complaints of dyspnea and lumbar pain. Chest computed tomography (CT) showed left pleural effusion. Thoracentesis showed pleural effusion with elevated levels of amylase.