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Hypothetical relationships between adenoma/adenomatosis and FNH. 1Vascular malformations: hereditary hemorrhagic telangiectasia; congenital absence of portal vein; intra hepatic venous shunt. 2Local vascular disturbances: Budd Chiari; cirrhosis; tumors (epithelioid haemangio-endothelioma; fibrolamellar hepatocellular carcinoma). 3The risk linked to estrogens.
