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Pancreaticopleural Fistula: A Cause of Recurrent Pleural Effusions in Chronic Pancreatitis

Pancreaticopleural fistula is a rare complication of chronic pancreatitis caused by disruption of the pancreatic duct and fistulous communication with the pleural cavity. It usually presents with respiratory symptoms from recurrent large volume pleural effusions. Paucity of abdominal symptoms makes it a diagnostic challenge, leading often to delayed diagnosis. Marked elevation of pleural fluid amylase, which is not a commonly performed test, is a sensitive marker in its detection. Imaging with magnetic resonance cholangiopancreatography and endoscopic retrograde cholangiopancreatography can help delineate the fistula. In this report, we present the clinical features, imaging, and management of a 59-year-old male patient with pancreaticopleural fistula, wherein the diagnosis was suspected only after repeated pleural fluid drainages were performed for re-accumulating pleural effusions and it was eventually successfully treated with pancreatic duct stenting. We review the literature with regards to the incidence, presentation, diagnosis, and management of this rare entity.