Figure 1

(a, b) Patient 1, nodule b: type 1 lesion. Small steatotic nodule with mildly disorganized lobular architecture; some small portal tracts contain arteries unaccompanied by bile ducts. At higher magnification (box) (b), dilated thin-walled vessels adjoin a small portal tract at the periphery of the nodule. H&E. (c) Patient 3, nodule b: type 1 lesion. Dilated vessels in and around small portal tracts near a large portal tract. Reticulin staining. (d) Patient 1: Non-lesional liver. A large hepatic vein with an irregularly thickened wall lies near small portal tracts that contain numerous arterial cross-sections. Anti-α-SMA immunostaining