Case 4. In addition to the presence of adenomas and FNH seen macroscopically (a), there were many tiny nodules (b, c). In (b) there were many CK7 positive biliary cells (b') in the vicinity of arteries. This nodule could be an early FNH lesion. In another nodule (c) CK7 positive cells were faintly stained, isolated and did not form biliary structures. This nodule (c') is more likely an adenoma than a pre-FNH lesion.