Korean J Pathol.  2006 Jun;40(3):250-254.

Nasal Type NK/T Cell Lymphoma with Pseudoepitheliomatous Hyperplasia: A Case Report

Affiliations
  • 1Department of Pathology, Daegu Catholic University School of Medicine, Daegu, Korea. kkpark@cu.ac.kr
  • 2Department of Otolaryngology Head and Neck Surgery, Daegu Catholic University School of Medicine, Daegu, Korea.

Abstract

A case of prominent pseudoepitheliomatous hyperplasia (PEH), that was misdiagnosed as squamous cell carcinoma (SCC) on the frozen section occured in the nasal mucosa of a patient suffering with nasal type NK/T cell lymphoma. To prevent misdiagnosis of this lesion, pathologists should be aware that NK/T cell lymphoma may be associated with overlying mucosal PEH, and so the physician must adhere to strict diagnostic criteria for making the diagnosis of SCC. The pathogenesis of PEH associated with NK/T cell lymphoma is not still clear, but it may be related to the production of growth factors, especially epidermal growth factor and transforming growth factor, by the underlying tumors.

Keyword

Pseudoepitheliomatous hyperplasia; NK/T cell lymphoma; EBV

MeSH Terms

Carcinoma, Squamous Cell
Diagnosis
Diagnostic Errors
Epidermal Growth Factor
Frozen Sections
Herpesvirus 4, Human
Humans
Hyperplasia*
Intercellular Signaling Peptides and Proteins
Lymphoma*
Nasal Mucosa
Transforming Growth Factors
Epidermal Growth Factor
Intercellular Signaling Peptides and Proteins
Transforming Growth Factors
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