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Head and Neck Pathology

, Volume 12, Issue 1, pp 62–70 | Cite as

Squamous and Neuroendocrine Specific Immunohistochemical Markers in Head and Neck Squamous Cell Carcinoma: A Tissue Microarray Study

  • J. S. LewisJr.
  • R. D. Chernock
  • J. A. Bishop
Original Paper

Abstract

The performance characteristics of neuroendocrine-specific and squamous-specific immunohistochemical markers in head and neck squamous cell carcinomas (SCC), in particular in oropharyngeal tumors in this era of human papillomavirus (HPV)-induced cases, are not well-established. The differential diagnosis for poorly differentiated SCCs, for nonkeratinizing oropharyngeal SCCs, and for other specific SCC variants such as basaloid SCC and undifferentiated (or lymphoepithelial-like) carcinomas includes neuroendocrine carcinomas. Given that neuroendocrine carcinomas of the head and neck are aggressive regardless of HPV status, separating them from SCC is critically important. In this study, we examined the neuroendocrine markers CD56, synaptophysin, and chromogranin-A along with the squamous markers p40 and cytokeratin 5/6 in a large tissue microarray cohort of oral, oropharyngeal, laryngeal, and hypopharyngeal SCCs with known HPV results by RNA in situ hybridization for the oropharyngeal tumors. Results were stratified by site and specific SCC variant. The neuroendocrine stains were rarely expressed in SCC (<1% overall) with CD56 the least, and chromogranin-A the most, specific markers. Further, p40 and cytokeratin 5/6 were very consistently expressed in all head and neck SCC (>98% overall), including very strong, consistent staining in oropharyngeal HPV-related nonkeratinizing SCC. Undifferentiated (or lymphoepithelial-like) carcinomas of the oropharynx are more frequently p40 or cytokeratin 5/6 negative or show only weak or focal expression. In summary, markers of neuroendocrine and squamous differentiation show very high specificity and sensitivity, respectively, across the different types of head and neck SCC.

Keywords

Oropharyngeal Squamous cell carcinoma p40 Neuroendocrine Immunohistochemistry Head and neck Human papillomavirus 

Notes

Acknowledgements

We would like to thank Donna M. Posey for her wonderful assistance with clerical support and spreadsheet data management for the various aspects of this study. We also acknowledge the Translational Pathology Shared Resource (TPSR) supported by NCI/NIH Cancer Center Support Grant 2P30 CA068485-14 and the Vanderbilt Mouse Metabolic Phenotyping Center Grant 5U24DK059637-13.

Supplementary material

12105_2017_825_MOESM1_ESM.docx (43 kb)
Supplementary material 1 (DOCX 43 KB)

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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • J. S. LewisJr.
    • 1
    • 2
  • R. D. Chernock
    • 3
    • 4
  • J. A. Bishop
    • 5
    • 6
  1. 1.Department of Pathology, Microbiology and ImmunologyVanderbilt University Medical CenterNashvilleUSA
  2. 2.Department of OtolaryngologyVanderbilt University Medical CenterNashvilleUSA
  3. 3.Department of Pathology and ImmunologyWashington University in St. LouisSt. LouisUSA
  4. 4.Department of Otolaryngology Head and Neck SurgeryWashington University in St. LouisSt. LouisUSA
  5. 5.Department of PathologyThe Johns Hopkins UniversityBaltimoreUSA
  6. 6.Department of Otolaryngology-Head and Neck SurgeryThe Johns Hopkins UniversityBaltimoreUSA

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