Is It Really SUMP Syndrome? A Case Report

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Abstract
Sump syndrome is a rare, long-term complication with a prevalence ranging from 0% to 9.6% in patients with a history of side-to-side choledochoduodenostomy. Choledochoduodenostomy was originally performed to achieve drainage of the common bile duct in high-risk patients with low morbidity, which was commonly done in the pre-endoscopic retrograde cholangiopancreatography era. “Sump” comes from the segment of the common bile duct between the anastomosis and the ampulla of Vater, which acts as a stagnant reservoir for debris, stones, and static bile. This predisposes patients to changes in the biliary tree with signs and symptoms in relation to that area. If left untreated, cholangitis, pancreatitis, hepatic abscesses, and secondary biliary cirrhosis can develop. Here, we have a case of a 77-year-old male with a history significant for choledochoduodenostomy, who presented with the clinical signs and symptoms of pancreatitis, choledocholithiasis, and urinary tract infection. Computed tomography (CT) scan findings revealed choledocholithiasis and an enlarged common bile duct with smaller adjacent calculi along with pneumobilia consistent with sump syndrome. The patient’s clinical status improved without invasive measures being taken, i.e. endoscopic retrograde cholangiopancreatography. He was subsequently discharged home after improving clinically and no invasive measures were pursued.

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