Focal nodular hyperplasia and hepatic adenoma: a review.

Focal Nodular Hyperplasia (FNH) and Hepatic Adenoma (HA) are a benign tumors of the liver. The association with the use of oral contraception in women in middle age has been mentioned. This benign liver tumors are relatively rare lesions and are usually unrelated to subjective symptoms. They are increasingly being diagnosed as a result of the widespread use of ultrasound, computed tomography and magnetic resonance in the evaluation of patients with non-specific abdominal symptoms.