title: Fibrolamellar carcinoma: A histologically unique tumor with unique molecular findings.
abstract: Fibrolamellar carcinoma is a unique type of hepatocellular carcinoma with a distinctive predilection for young patients without underlying liver disease, characteristic large neoplastic cells with intervening, dense fibrosis, co-expression of keratin 7 and CD68 and activation of protein kinase A (most often by formation of DNAJB1-PRKACA). Fibrolamellar carcinoma has a similar prognosis to conventional hepatocellular carcinomas arising in non-cirrhotic livers. The current American Joint Cancer Committee staging system does not provide optimal stratification of patients with fibrolamellar carcinoma and an alternate systems should be considered in the future. The only effective treatment for fibrolamellar carcinoma is complete resection. Novel therapies may be on the horizon as investigation into the molecular biology of fibrolamellar carcinoma continues.
authors.affiliation: Division of Anatomic Pathology, Mayo Clinic, 200 First Street SW, Rochester, MN, United States.
authors.forename: Rondell P
authors.initials: RP
authors.lastname: Graham
authors.affiliation: Division of Anatomic Pathology, Mayo Clinic, 200 First Street SW, Rochester, MN, United States.
authors.forename: Michael S
authors.initials: MS
authors.lastname: Torbenson
mesh_terms: D014408:Biomarkers, Tumor / Q000032:analysis; D006528:Carcinoma, Hepatocellular / Q000235:genetics / Q000473:pathology*; D054751:Cyclic AMP-Dependent Protein Kinase Catalytic Subunits / Q000235:genetics; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D055815:Young Adult
chemical_list: D014408:Biomarkers, Tumor; D054751:Cyclic AMP-Dependent Protein Kinase Catalytic Subunits; C517757:PRKACA protein, human
keywords: Carney complex; Central scar; Cytokeratin 7; PRKACA rearrangements