[Immunophenotypic classification of 3 cases of hepatocellular adenoma. Differential diagnosis with focal nodular hyperplasia].

Interest in adenomas has been renewed by the discovery of the molecular changes in these tumors. The latest World Health Organization publication on gastrointestinal tract tumors (2010) includes four types of hepatic adenomas, which are well characterized immunohistochemically, genotypically and phenotypically. In these tumors, medical history and morphological behavior play an important role in determining the risk of malignancy, mainly in adenomas with a b-catenin mutation.