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Adenosquamous Carcinoma of Hypopharynx with Intestinal-Phenotype

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Abstract

Adenosquamous carcinomas of the head and neck (ADSCs) are rare locally aggressive malignancies characterized by the presence of two distinctive components, a squamous cell carcinoma and an adenocarcinoma. The immunophenotype of the glandular component of ADSCs has only been rarely studied but has been reported as being positive for keratin 7 (CK7) and carcinoembryonic antigen (CEA) and negative for keratin 20 (CK20). Herein, we report a case of an ADSCs of the hypopharynx composed of a superficial squamous cell carcinoma and an adenocarcinoma with an intestinal phenotype. The patient was a 62 year-old male with a T2 N0 M0 squamous cell carcinoma (SCC) of uvula and palate and a T1 N0 M0 of right hypopharynx. The ADSCs of the hypopharynx was composed of a minimally invasive SCC and an adenocarcinoma with tubulo-glandular and cribriform architecture. The neoplastic glands were positive for CK7, CK20, CDX2, CEA and Villin. The patient underwent radiotherapy to both tumors and remains well with no evidence of recurrent disease 19 months after treatment. To the best of our knowledge, this is the first report of an ADSCs of the head and neck with an intestinal phenotype in its glandular component.

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Authors and Affiliations

  1. Department of Pathology, University Health Network, Toronto General Hospital, 200 Elizabeth Street, Toronto, ON, M5G 2C4, Canada

    Marco A. O. Magalhaes, Ilan Weinreb & Bayardo Perez-Ordonez

  2. Department of Oral Pathology and Oral Medicine, Faculty of Dentistry, University of Toronto, Toronto, ON, Canada

    Marco A. O. Magalhaes

  3. Department of Otolaryngology-Head and Neck Surgery/Surgical Oncology, Wharton Head and Neck Program, University Health Network, Princess Margaret Hospital, Toronto, ON, Canada

    Jonathan C. Irish

  4. Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada

    Ilan Weinreb & Bayardo Perez-Ordonez

Authors
  1. Marco A. O. Magalhaes
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  2. Jonathan C. Irish
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  3. Ilan Weinreb
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  4. Bayardo Perez-Ordonez
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Corresponding author

Correspondence to Bayardo Perez-Ordonez.

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Magalhaes, M.A.O., Irish, J.C., Weinreb, I. et al. Adenosquamous Carcinoma of Hypopharynx with Intestinal-Phenotype. Head and Neck Pathol 9, 114–118 (2015). https://doi.org/10.1007/s12105-013-0515-3

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  • DOI: https://doi.org/10.1007/s12105-013-0515-3

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