Biliary complications after liver transplantation: A computed tomography and magnetic resonance imaging pictorial review

Figure 8 Biliary sludge and biliary cast. A: Patient with biliary sludge and anastomotic stricture 3 mo after liver re-transplantation. Magnetic resonance cholangiopancreatography (MRCP) maximum intensity projection image demonstrates anastomotic biliary stricture (arrowhead) with marked upstream biliary dilatation; B: Three-dimensional MRCP in the coronal plane in the same patient demonstrates biliary sludge (arrow) in the dilated hepatic duct extending into the left and right ducts. C: Patient with biliary cast 2 y after liver transplantation. Unenhanced T1-weighted gradient-recalled image shows hyperintense content (arrowhead) in the left biliary duct, consistent with biliary cast.