Figure 1From: Over-expression of glutamine synthase in focal nodular hyperplasia (part 1): Early stages in the formation support the hypothesis of a focal hyper-arterialisation with venous (portal and hepatic) and biliary damageContrast-enhanced T1-weighted images. They show strong enhancement of the lesion (white arrow) at arterial phase (A) and isointense signals relative to liver parenchyma at portal venous phase (B).Back to article page