Imaging and management of complications post biliary-enteric anastomosis

Biliary-enteric anastomosis is a common surgical procedure for benign and malignant pathologies involving bile ducts, pancreas and duodenum, as well as during liver transplantation. Imaging is key in detecting potential complications. Ultrasound, computed tomography (CT), magnetic resonance imaging (MRI), and nuclear scintigraphy provide complementary information. Ultrasound offers real-time assessment of bile duct dilation and fluid collection. CT scan, due to its wide availability, is often performed first and provides detailed cross-sectional anatomy. MRI, including MR cholangiography, excels in visualizing bile ducts and detecting subtle changes in anastomosis integrity. Common complications of BEA include bile leak, biliary anastomotic stricture, and cholangitis, each presenting with distinct imaging features. Effective imaging allows for early detection and management of these complications, improving patient outcomes. This review discusses the role of imaging in assessing post-BEA complications and emphasizes the importance of multimodal imaging approaches in the comprehensive evaluation of BEA and its complications.