Hepatocellular adenoma is a solid benign neoplasm of the liver, quite rare, heterogeneous in its immunohistochemical features and can be very difficult to diagnose in the realities of modern medicine. Such a tumor is often an incidental diagnostic finding, and treatments range from observation to radical surgical tactics. The most frequent cases of detection in women of childbearing age, taking combined oral contraceptives or other hormonal drugs. This paper will consider the features of the clinical course, modern diagnostic methods and various approaches to the treatment of this type of tumor.