Basaloid nasopharyngeal carcinoma: A population-based analysis of a rare tumor

Aykut A Unsal, J. Renee Booth, Nicholas A. Rossi, James Kenneth Byrd, Stilianos E Kountakis

Research output: Contribution to journalArticle

Abstract

Objectives: Basaloid nasopharyngeal carcinoma (BNPC) is an extremely rare malignancy with a paucity of cases reported in the literature. This analysis represents the largest cohort of BNPC to date. Study Design: Retrospective population-based analysis. Methods: The Surveillance, Epidemiology, and End Results registry from 2001 to 2015 was utilized to extract a total of 82 cases of BNPC. Data were analyzed for incidence trends, demographic, and tumor characteristics, as well as potential outcome prognosticators. Results: White male patients between the ages of 40 to 79 years were most commonly affected. The incidence was measured at 0.06 per 100 thousand people. The majority of tumors were considered high grade (grade III/IV; 92.2%). At presentation, patients were most commonly advanced stage (American Joint Committee on Cancer [AJCC] stage IV) at 29.3%, followed by AJCC stages II and III (20.7%, respectively). T2 tumors were most common at 28.8%. Cervical node involvement and distant metastasis were measured at 53.7% and 10.4%, respectively. One-year, 5-year, and 10-year disease-specific survival was 87.7%, 60.7%, and 29.8%, respectively. No prognostic factors were identified in this study. Conclusion: Basaloid squamous cell carcinoma represents a histologic subtype of nasopharyngeal carcinoma with excellent short-term outcomes but poor survival at 10 years when compared to conventional squamous cell carcinomas. Level of Evidence: NA. Laryngoscope, 2019.

Original languageEnglish (US)
JournalLaryngoscope
DOIs
StateAccepted/In press - Jan 1 2019

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Population
Neoplasms
Squamous Cell Carcinoma
Laryngoscopes
Survival
Incidence
Registries
Nasopharyngeal carcinoma
Epidemiology
Retrospective Studies
Demography
Neoplasm Metastasis

Keywords

  • Basaloid squamous cell carcinoma
  • SEER
  • Surveillance Epidemiology and End Results
  • basaloid nasopharyngeal carcinoma
  • disease-specific survival
  • incidence
  • population-based
  • survival

ASJC Scopus subject areas

  • Otorhinolaryngology

Cite this

Basaloid nasopharyngeal carcinoma : A population-based analysis of a rare tumor. / Unsal, Aykut A; Booth, J. Renee; Rossi, Nicholas A.; Byrd, James Kenneth; Kountakis, Stilianos E.

In: Laryngoscope, 01.01.2019.

Research output: Contribution to journalArticle

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abstract = "Objectives: Basaloid nasopharyngeal carcinoma (BNPC) is an extremely rare malignancy with a paucity of cases reported in the literature. This analysis represents the largest cohort of BNPC to date. Study Design: Retrospective population-based analysis. Methods: The Surveillance, Epidemiology, and End Results registry from 2001 to 2015 was utilized to extract a total of 82 cases of BNPC. Data were analyzed for incidence trends, demographic, and tumor characteristics, as well as potential outcome prognosticators. Results: White male patients between the ages of 40 to 79 years were most commonly affected. The incidence was measured at 0.06 per 100 thousand people. The majority of tumors were considered high grade (grade III/IV; 92.2{\%}). At presentation, patients were most commonly advanced stage (American Joint Committee on Cancer [AJCC] stage IV) at 29.3{\%}, followed by AJCC stages II and III (20.7{\%}, respectively). T2 tumors were most common at 28.8{\%}. Cervical node involvement and distant metastasis were measured at 53.7{\%} and 10.4{\%}, respectively. One-year, 5-year, and 10-year disease-specific survival was 87.7{\%}, 60.7{\%}, and 29.8{\%}, respectively. No prognostic factors were identified in this study. Conclusion: Basaloid squamous cell carcinoma represents a histologic subtype of nasopharyngeal carcinoma with excellent short-term outcomes but poor survival at 10 years when compared to conventional squamous cell carcinomas. Level of Evidence: NA. Laryngoscope, 2019.",
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