PMID- 24743216 OWN - NLM STAT- MEDLINE DCOM- 20150701 LR - 20230210 IS - 1530-0285 (Electronic) IS - 0893-3952 (Print) IS - 0893-3952 (Linking) VI - 27 IP - 11 DP - 2014 Nov TI - Hepatocellular carcinoma arising in adenoma: similar immunohistochemical and cytogenetic features in adenoma and hepatocellular carcinoma portions of the tumor. PG - 1499-1509 LID - 10.1038/modpathol.2014.50 [doi] AB - Well-differentiated hepatocellular carcinoma in non-cirrhotic liver can show morphological features similar to hepatocellular adenoma. In rare instances, hepatocellular carcinoma can arise in the setting of hepatocellular adenoma. This study compares the immunohistochemical and cytogenetic features of the hepatocellular adenoma-like and hepatocellular carcinoma portions of these tumors. Immunohistochemistry for beta-catenin, glutamine synthetase, serum amyloid A protein, glypican-3, and heat-shock protein 70 was done in 11 cases of hepatocellular carcinoma arising in hepatocellular adenoma in non-cirrhotic liver. Tumors with nuclear beta-catenin and/or diffuse glutamine synthetase were considered beta-catenin activated. Fluorescence in situ hybridization (FISH) was done in nine cases for gains of chromosomes 1, 8 and MYC. There were seven men (33-75 years) and four women (29-65 years). Focal atypical morphological features were seen in hepatocellular adenoma-like areas in 7 (64%) cases. Hepatocellular adenoma-like areas showed features of inflammatory hepatocellular adenoma in 7 (64%) cases; 4 of these were also serum amyloid A-positive in the hepatocellular carcinoma portion. beta-Catenin activation, heat-shock protein 70 positivity, and chromosomal gains on FISH were seen in the hepatocellular adenoma portion in 55%, 40%, and 56% of cases, and 73%, 60%, and 78% of cases in the hepatocellular carcinoma portion, respectively. In conclusion, the hepatocellular adenoma-like portion of most cases of hepatocellular carcinoma arising in hepatocellular adenoma shows features typically seen in hepatocellular carcinoma such as focal morphological abnormalities, beta-catenin activation, heat-shock protein 70 expression, and chromosomal gains. Hepatocellular adenoma-like areas in these tumors, especially in men and older women, may represent an extremely well-differentiated variant of hepatocellular carcinoma, whereas the morphologically recognizable hepatocellular carcinoma portion represents a relatively higher grade component of the tumor. FAU - Kakar, Sanjay AU - Kakar S AD - Department of Anatomic Pathology, University of California, San Francisco, CA, USA. AD - Department of Pathology, Veteran Affairs Medical Center, San Francisco, CA, USA. FAU - Grenert, James P AU - Grenert JP AD - Department of Anatomic Pathology, University of California, San Francisco, CA, USA. FAU - Paradis, Valerie AU - Paradis V AD - Department of Pathology, Beaujon Hospital, Clichy, France, Rush University, Chicago, IL, USA. FAU - Pote, Nicolas AU - Pote N AD - Department of Pathology, Beaujon Hospital, Clichy, France, Rush University, Chicago, IL, USA. FAU - Jakate, Shriram AU - Jakate S AD - Department of Pathology, Rush University, Chicago, IL, USA. FAU - Ferrell, Linda D AU - Ferrell LD AD - Department of Anatomic Pathology, University of California, San Francisco, CA, USA. LA - eng GR - P30 DK026743/DK/NIDDK NIH HHS/United States PT - Journal Article DEP - 20140418 PL - United States TA - Mod Pathol JT - Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc JID - 8806605 RN - 0 (Biomarkers, Tumor) RN - 0 (CTNNB1 protein, human) RN - 0 (GPC3 protein, human) RN - 0 (Glypicans) RN - 0 (HSP70 Heat-Shock Proteins) RN - 0 (MYC protein, human) RN - 0 (Proto-Oncogene Proteins c-myc) RN - 0 (Serum Amyloid A Protein) RN - 0 (beta Catenin) RN - EC 6.3.1.2 (Glutamate-Ammonia Ligase) SB - IM MH - Adenoma, Liver Cell/chemistry/*diagnosis/genetics/pathology MH - Adult MH - Aged MH - *Biomarkers, Tumor/analysis/genetics MH - Carcinoma, Hepatocellular/chemistry/*diagnosis/genetics/pathology MH - Cell Differentiation MH - Chromosomes, Human, Pair 1 MH - Chromosomes, Human, Pair 8 MH - Female MH - Glutamate-Ammonia Ligase/analysis MH - Glypicans/analysis MH - HSP70 Heat-Shock Proteins/analysis MH - Humans MH - *Immunohistochemistry MH - *In Situ Hybridization, Fluorescence MH - Liver Neoplasms/chemistry/*diagnosis/genetics/pathology MH - Male MH - Middle Aged MH - Neoplasm Grading MH - Neoplasms, Complex and Mixed/chemistry/*diagnosis/genetics/pathology MH - Predictive Value of Tests MH - Proto-Oncogene Proteins c-myc/genetics MH - Serum Amyloid A Protein/analysis MH - beta Catenin/analysis PMC - PMC4803443 MID - NIHMS767835 EDAT- 2014/04/20 06:00 MHDA- 2015/07/02 06:00 PMCR- 2016/03/22 CRDT- 2014/04/19 06:00 PHST- 2013/09/27 00:00 [received] PHST- 2014/02/24 00:00 [revised] PHST- 2014/02/25 00:00 [accepted] PHST- 2014/04/19 06:00 [entrez] PHST- 2014/04/20 06:00 [pubmed] PHST- 2015/07/02 06:00 [medline] PHST- 2016/03/22 00:00 [pmc-release] AID - S0893-3952(22)03541-4 [pii] AID - 10.1038/modpathol.2014.50 [doi] PST - ppublish SO - Mod Pathol. 2014 Nov;27(11):1499-1509. doi: 10.1038/modpathol.2014.50. Epub 2014 Apr 18.