Detecting biliary complications following liver transplantation with contrast-enhanced ultrasound

Figure 3 A 57-year-old male patient who underwent liver transplantation due to liver failure. More than two months postoperatively, an ultrasound examination revealed necrosis of the bile duct wall near the porta hepatis region. A: Two-dimensional ultrasound revealed that morphology and parenchymal echoes of the transplanted liver showed no significant abnormalities. The common bile duct wall was edematous and thickened, measuring approximately 5.3 mm in thickness, with a narrowed lumen of about 2.3 mm (indicated by the arrow); B: Contrast-enhanced ultrasound revealed complete non-perfusion of the bile duct wall near the common bile duct anastomosis (indicated by the arrow).