title: [Regulations in the classification of primary liver neoplasms].
mesh_terms: D006528:Carcinoma, Hepatocellular / Q000145:classification* / Q000473:pathology; D006801:Humans; D008113:Liver Neoplasms / Q000145:classification* / Q000473:pathology; D009367:Neoplasm Staging / Q000592:standards