Fig. 25. Post-transplant portal vein thrombosis: a 51-year-old man, status post-liver transplantation 1 month ago, presented with abdominal pain and fatigue.

A, B. Grayscale (A) and color Doppler (B) ultrasonography reveal a partially occlusive echogenic thrombus (arrow) within the main portal vein with adjacent color aliasing (open arrow). C. Contrast-enhanced axial computed tomography confirms the presence of a hypodense thrombus (arrow) within the main portal vein. Large-volume ascites is also present.