Peripancreatic Collection Surrounding the Portal Vein Extending to the Gallbladder in Acute-On-Chronic Pancreatitis: A Case report of a Rare Presentation of a Common Disease

Abstract Peripancreatic collections are common complications of acute pancreatitis and generally, they are located around the pancreas. Their occurrence in extra-pancreatic locations is rare. We report the case of a 68-year-old female that was admitted with an acute-on-chronic pancreatitis that developed a peripancreatic collection ascending along the portal vein and extending around the gallbladder. Initial diagnosis was suggested by MRI imaging and a percutaneous drainage confirmed the diagnosis. The patient recovered well postprocedure, with a 12-month follow-up showing no signs of recurrence. This case highlights a rare extra-pancreatic presentation of peripancreatic collections in pancreatitis, emphasizing the importance of imaging in diagnosis and the efficacy of percutaneous drainage in management.