The diagnosis of hepatocellular adenomas (HCA) may occasionally be difficult for the following reasons.(i)The nodule is discovered in a context different to what we are used to see, such as in men, in women not exposed to oral contraceptives (OC), in older persons, or in children.(ii)The tumor per se may be difficult to identify due to the partial necrosis or to the major remodeling of the tumor leading to the presence of criteria seen mostly in focal nodular hyperplasia (FNH) and/or to difficulties in differentiation from hepatocellular carcinoma (HCC).(iii)The presence of an underlying liver disease such as nonalcoholic steatohepatitis (NASH), vascular disorder, and fibrosis.(iv)HCA, HCC, and FNH or different HCA subtypes can be present in the same patient, some more prone to HCC transformation, with the difficult task, in some cases, to differentiate HCA from HCC.(v)Finally, HCA can be discovered unexpectedly in patients treated for other liver tumors or developed in the context of diseases affecting the liver or other organ