Fig. 3
From: HBP-enhancing hepatocellular adenomas and how to discriminate them from FNH in Gd-EOB MRI
A/a shows an entirely enhancing FNH with a heterogeneous uptake pattern during the HBP. The FNH has a central scar and also appears lobulated. B/s also shows another entirely enhancing FNH during the HBP with a pseudocapsule. In C/c, the same lesion as in B/b clearly shows a T2-hyperintense central scar in the T2w FS sequence. D/d shows the classic atoll sign in an inflammatory subtype of HCA in the right liver lobe. An atoll sign is characterized by a hyperintense rim and a hypointense center in T2w images