Volume 26, Issue 2 pp. 66-72
Review Article
Free Access

Extranodal NK/T-cell lymphoma: diagnosis and treatment cues

Ritsuro Suzuki

Corresponding Author

Ritsuro Suzuki

Department of HSCT Data Management, Nagoya University, School of Medicine, Nagoya, Japan

Department of HSCT Data Management, Nagoya University, School of Medicine, 1-1-20 Daiko-Minami, Higashi-ku, Nagoya, 461-0047 Japan.Search for more papers by this author
Kengo Takeuchi

Kengo Takeuchi

Department of Pathology, The Cancer Institute of Japanese Foundation for Cancer Research, Tokyo, Japan

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Koichi Ohshima

Koichi Ohshima

Department of Pathology, Kurume University, School of Medicine, Fukuoka, Japan

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Shigeo Nakamura

Shigeo Nakamura

Department of Pathology, Nagoya University, School of Medicine, Nagoya, Japan

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First published: 19 February 2008
Citations: 116

Abstract

Extranodal NK/T-cell lymphoma, nasal type (ENKL) is mostly endemic to East Asia. It predominantly occurs in the nasal or paranasal areas and less frequently in the skin. Most of the tumours show NK-cell, but rarely T-cell, phenotypes. The Epstein–Barr virus (EBV) genome can be usually detected in lymphoma cells. Geographic localization of ENKL matches the endemic distribution of EBV, suggesting that EBV plays an important role in lymphomagenesis. Originally, NK-cell and T-cell types were believed to present the same clinicopathologic characteristics, but recent data suggest more aggressive characteristics for the NK-cell phenotype. Although ENKL is sensitive to radiotherapy, it shows a poorer response to chemotherapeutic agents than other lymphomas due to expression of p-glycoprotein. Therefore, new therapeutic approaches must be considered. Several new clinical trials are now being conducted in East Asia. Copyright © 2008 John Wiley & Sons, Ltd.

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