Section of Gastroenterology;
DIBIMIS;
University of Palermo;
90127 Palermo;
Italy;
Department of Human Pathology;
University of Palermo;
90127 Palermo;
Italy;
Primary; biliary; cirrhosis; Hereditary; hemorragic; telangiectasia; Focal; nodular; hyperplasia; Ursodeoxycholic; acid; Immunostaining;