Congenital Extrahepatic Portosystemic Shunts: Spectrum of Findings on Ultrasound, Computed Tomography, and Magnetic Resonance Imaging

Figure 5

A 4-year-old boy with vague upper abdominal pain and abdominal distension since he was 2 years old. Peripheral enhancement of the lesion (a, arrow) is seen in the arterial phase of contrast enhanced US. The lesion becomes isoechoic to the adjacent liver parenchyma (b, arrow) in the venous phase of contrast enhanced US. The lesion retains contrast (c, arrow) in the delayed phase of contrast enhanced US. Points favouring nodular regenerative hyperplasia include arterial hyperenhancement and retention of contrast in the portal venous and delayed phases.

(a)

(b)

(c)