Figure 18From: 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 damageFibrotic portal tract. A fibrotic portal tract (see Fig. 6, box on the left) is observed at higher magnification. There are several arteries and a few ducts and ductules (A – α-SMA staining). A possible portal vein remnant can also be identified (B – trichrome staining) (arrow).Back to article page