1431 A Bad Connection: Chronic Pancreatitis Leading to a Pancreticopleural Fistula

Abstract

INTRODUCTION: Pancreatic-pleural/mediastinal fistulas are a rare complication of chronic pancreatitis. Fistulous connections occur through fenestrations in the diaphragm. Pancreatic ductal stenting can be valuable, though medical and surgical options may still be required. We describe a case of pancreatic-pleural fistula with mediastinal tracking successfully treated with combined endoscopic and medical management. CASE DESCRIPTION/METHODS: The patient is a 53-year-old male with a history of chronic pancreatitis secondary to alcohol abuse, a pancreatic pseudocyst, and compensated heart failure. The patient was admitted with new onset shortness of breath and epigastric abdominal pain. CT showed acute on chronic pancreatitis with a pseudocyst in the uncinate process, lower mediastinal inflammatory changes, and bilateral pleural effusions. Thoracentesis was performed, demonstrating an amylase of >7500. Though MRCP did not show a discrete connection, the clinical presentation was consistent with pancreatic-pleural fistula. ERCP was performed, but the endoscopist was unable to cannulate the pancreatic duct. Patient was placed on octreotide and continued to undergo therapeutic thoracenteses as needed. Patient returned 1 month later with complaints of neck fullness, continued shortness of breath, and abdominal pain. CT was significant for a fluid collection extending from pancreatic head to the mediastinum tracking along the anterior aspect of the esophagus and persistent pleural effusions. MRCP was performed and revealed a fistulous connection between the pseudocyst, pleural space, and mediastinum. Repeat ERCP was done with successful pancreatic stent placement. Patient subsequently had resolution of both mediastinal and pleural fluid collections. The pancreatic stent was removed with durable resolution of fluid collections. DISCUSSION: Pancreatic fistulas are reported to resolve with supportive care alone in 80% of external and 50-65% of internal fistulas. In our case, supportive care including octreotide use was insufficient for fistula resolution. The patient was ultimately treated successfully with pancreatic stenting. Had this failed, alternative approaches could have included nasojejunal feeding, endoscopic sealants, or surgical correction. This case highlights a rare, but serious complication of chronic pancreatitis and management options to be considered.