title: Utilization of hepatocyte-specific antibody in the immunocytochemical evaluation of liver tumors.
abstract: A monoclonal antibody highly specific for benign and malignant hepatocytes (HepPar 1) was evaluated as part of an antibody panel used to differentiate hepatocellular from nonhepatocellular neoplasms. Sixty-five liver tumors and two extrahepatic tumors from patients with documented liver tumors were studied. Twenty-two neoplasms were of hepatocellular origin, three were combined hepatocellular/cholangiocarcinomas, and the remainder were of nonhepatocellular origin. HepPar 1 alone had an 82% sensitivity and 90% specificity for the detection of hepatocellular neoplasms. The corresponding values for alpha-fetoprotein were 57% and 97%. Polyclonal antibody to carcinoembryonic antigen (canalicular pattern) had a sensitivity of 79% and specificity of 97% for these tumors. The use of antibody panels provided superior results when compared with individual antibodies. In summary, HepPar 1 monoclonal antibody is a useful reagent for the differential diagnosis of hepatocellular tumors. Its utility is enhanced when it is used as part of a diagnostic antibody panel.
authors.affiliation: Department of Pathology, Pittsburgh Transplantation Institute, University of Pittsburgh Medical Center, Pennsylvania 15213, USA.
authors.forename: M I
authors.initials: MI
authors.lastname: Minervini
authors.forename: A J
authors.initials: AJ
authors.lastname: Demetris
authors.forename: R G
authors.initials: RG
authors.lastname: Lee
authors.forename: B I
authors.initials: BI
authors.lastname: Carr
authors.forename: J
authors.initials: J
authors.lastname: Madariaga
authors.forename: M A
authors.initials: MA
authors.lastname: Nalesnik
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000911:Antibodies, Monoclonal; D002272:Carcinoembryonic Antigen / Q000032:analysis; D006528:Carcinoma, Hepatocellular / Q000175:diagnosis*; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007223:Infant; D008099:Liver / Q000737:chemistry / Q000276:immunology*; D008113:Liver Neoplasms / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D012680:Sensitivity and Specificity; D000509:alpha-Fetoproteins / Q000032:analysis
chemical_list: D000911:Antibodies, Monoclonal; D002272:Carcinoembryonic Antigen; D000509:alpha-Fetoproteins