Liver and intrahepatic bile ducts - tumor
Hepatocellular carcinoma
Clear cell variant

Author: Deepali Jain, M.D. (see Authors page)

Revised: 27 November 2017, last major update February 2012

Copyright: (c) 2002-2017, PathologyOutlines.com, Inc.

PubMed Search: Clear cell hepatocellular carcinoma[TI]

Cite this page: Jain, D. Clear cell variant of hepatocellular carcinoma. PathologyOutlines.com website. http://pathologyoutlines.com/topic/livertumorclearcellHCC.html. Accessed December 17th, 2017.
Definition / general
  • Predominant appearance of neoplastic hepatocytes with abundant clear cytoplasm
  • Predominant in 5 - 16% of cases but some clear cells present in 20 - 40% of cases
  • Clear cytoplasm is due to cytoplasmic fat or glycogen
  • May need to hunt for typical hepatocellular carcinoma to rule out metastatic tumor
Clinical features
Microscopic (histologic) description
  • Trabecular, pseudoacinar, solid or mixed patterns of large number of neoplastic hepatocytes with abundant clear cytoplasm (glycogen or lipid) and round nuclei
  • May have bland nuclear features
  • May have intracytoplasmic bile (5 - 33%)
  • Usually no intratumoral fibrosis except in areas of hemorrhage and necrosis
  • Must distinguish from HCC variant with foamy histiocytes (Case Rep Gastroenterol 2010;4:286)
Microscopic (histologic) images

Images hosted on other servers:

Various images

Positive stains
Negative stains
  • EMA and LeuM1 (positive in clear cell renal cell carcinoma)
Differential diagnosis
  • Balloon cell melanoma: S100+, HMB45+, MelanA+, HepPar1-, pCEA-
  • Clear cell neuroendocrine tumors: chromogranin+, synaptophysin+, MOC31+
  • Epithelioid angiomyolipoma: HMB45+, SMA+
  • Metastatic renal (PAX2+, EMA+), adrenal (inhibin+, MelanA+, calretinin+) or ovarian carcinoma: no classic hepatocellular carcinoma present