Steatohepatitic hepatocellular carcinoma (SH-HCC): a distinctive histological variant of HCC in hepatitis C virus-related cirrhosis with associated NAFLD/NASH

Am J Surg Pathol. 2010 Nov;34(11):1630-6. doi: 10.1097/PAS.0b013e3181f31caa.

Abstract

In explant livers with chronic hepatitis C (HCV-C) we have noted a distinctive histologic variant that we have termed steatohepatitic hepatocellular carcinoma (SH-HCC) with features resembling non-neoplastic steatohepatitis, including large droplet steatosis, ballooning of malignant hepatocytes, Mallory-Denk bodies, inflammation, and pericellular fibrosis. This study was undertaken to further describe the characteristics and prevalence of this histologic variant in HCV-C and any possible association with underlying risk factors for nonalcoholic fatty liver disease (NAFLD) and nonalcoholic steatohepatitis (NASH). We selected two 2-year periods (mid-2003 to mid-2005 and 2007 to 2008), from which selected explant livers with HCV-C and HCC were examined to determine the characteristics and frequency of SH-HCC. The underlying cirrhotic liver was also reassessed for steatosis and evidence of steatohepatitis. Clinical records were consulted for concomitant NAFLD and NASH risk factors. The SH-HCC variant was found in a total of 22 of 62 HCC cases (35.5%). Fourteen of the 22 patients with SH-HCC (63.6%) had at least one known risk factor for NAFLD/NASH including diabetes (6 of 22, 27.3%), obesity (6 of 22, 27.3%), hypertension (11 of 22, 50%), and hyperlipidemia (5 of 22, 27.8%). In 14 of the 22 cases (63.6%) of SH-HCC, the non-neoplastic liver showed changes of NAFLD/NASH superimposed on otherwise typical features of HCV-C. In conclusion, in our series of HCV-C explants, approximately one-third of HCCs show a distinctive histological variant termed SH-HCC. Underlying risk factors for NAFLD and for NASH were identified in 63.6% of our cases. Moreover, non-neoplastic tissue in HCV-C explants showed changes of NAFLD/NASH in 63.6% of cases. These results suggest a possible NAFLD/NASH pathway leading to SH-HCC in the setting of HCV-C which requires further investigation in the future.

MeSH terms

  • Aged
  • Biomarkers, Tumor / analysis
  • Carcinoma, Hepatocellular / chemistry
  • Carcinoma, Hepatocellular / classification
  • Carcinoma, Hepatocellular / epidemiology
  • Carcinoma, Hepatocellular / pathology*
  • Carcinoma, Hepatocellular / virology
  • Chi-Square Distribution
  • Fatty Liver / classification
  • Fatty Liver / epidemiology
  • Fatty Liver / pathology*
  • Fatty Liver / virology
  • Female
  • Hepatitis C, Chronic / complications*
  • Hepatitis C, Chronic / epidemiology
  • Hepatitis C, Chronic / pathology
  • Hepatocytes / pathology
  • Humans
  • Immunohistochemistry
  • Lipids / analysis
  • Liver / chemistry
  • Liver / pathology*
  • Liver / virology
  • Liver Cirrhosis / epidemiology
  • Liver Cirrhosis / pathology*
  • Liver Cirrhosis / virology
  • Liver Neoplasms / chemistry
  • Liver Neoplasms / classification
  • Liver Neoplasms / epidemiology
  • Liver Neoplasms / pathology*
  • Liver Neoplasms / virology
  • Male
  • Middle Aged
  • New York City
  • Organelles / pathology
  • Prevalence
  • Risk Assessment
  • Risk Factors
  • Terminology as Topic
  • Time Factors

Substances

  • Biomarkers, Tumor
  • Lipids