title: Primary benign solid tumors of the liver.
abstract: The benign solid primary tumors of the liver separate into three major groups: (1) the most common lesions--small, nodular tumors, often found incidentally with histologic features suggesting a reactive etiology, that never rupture or metastasize, that seem to grow most rapidly in children and pregnant women, and that are probably unrelated to birth control medication; (2) the less common adenomas that are purely epithelial, that most often occur in menstruating females, that often show necrosis and rupture, and that are closely associated with oral contraceptive agents; and (3) very rare tumors, usually mesenchymal, occurring solely in children. The therapeutic and prognostic implications of these tumors are defined based upon a study of 111 patients, all but one of whom have undergone resection.
mesh_terms: D000293:Adolescent; D000328:Adult; D006528:Carcinoma, Hepatocellular / Q000145:classification; D002648:Child; D005260:Female; D006222:Hamartoma / Q000145:classification; D006801:Humans; D008099:Liver / Q000473:pathology; D008113:Liver Neoplasms / Q000145:classification* / Q000473:pathology; D008297:Male; D011247:Pregnancy; D009626:Terminology as Topic