EP72 - Spontaneous Hepatic subcapsular Biloma Secondary to Choledocholithiasis with concurrent calculous cholecystitis

Abstract Introduction The term "Biloma," introduced in 1979 by Gould and Patel, denotes an encapsulated extrahepatic bile collection primarily caused by iatrogenic or traumatic injuries1. Spontaneous Biloma, a rare non-traumatic occurrence, involves the spontaneous perforation of extrahepatic or intrahepatic bile ducts. In our case report, the spontaneous Biloma developed because of an abrupt increase in bile duct pressure secondary to biliary obstruction because of choledocholithiasis 2. Case Report We present an 85-year-old male with calculous cholecystitis and concurrent choledocholithiasis, leading to acute severe cholangitis. There was no history of surgery, instrumentation, or trauma. He exhibited hemodynamic instability and acute renal failure. Diagnostic tests revealed raised inflammatory markers and deranged liver and kidney functions. CT scans unveiled a large subcapsular liver collection compressing the parenchyma (Figure a &b), alongside dilated intrahepatic biliary radicles, common bile duct, and choledocholithiasis. Treatment Nowadays, treatment for spontaneous Biloma is nonsurgical. Urgent endoscopic drainage and percutaneous transhepatic cholangiogram (PTC) – (Figure c) were performed, followed by ERCP, sphincterotomy, and stone removal (Figure d) once the patient stabilized3. Subsequent CT scans indicated resolution of the subcapsular collection (Figure e). During recovery, the patient experienced a small pulmonary embolism, managed conservatively. Conclusion This case underscores the rare occurrence of spontaneous hepatic subcapsular Biloma associated with choledocholithiasis in an elderly patient. Timely intervention with endoscopic and radiological procedures proved effective, leading to resolution of the Biloma and successful management of causative pathology.