Phenotypic analysis of peripheral T/NK cell lymphoma: study of 408 Japanese cases with special reference to their anatomical sites.
The World Health Organization (WHO) classification of malignant lymphoma presented a list of disease entities well defined by clinical, immunological and genetic features. Therefore, the current diagnosis of peripheral T/NK-cell lymphomas (PTNKLs) essentially requires the inclusion of anatomical sites of disease and phenotypical features. We analyzed 408 Japanese cases of PTNKLs in order to clarify the relationship between anatomical sites of disease and phenotypical features and to translate the functional subsets of T and NK cells into their diagnoses for further understanding lymphomatic biology. The T/NK-cell lymphoma entities were allocated into three categories: (i) cytotoxic memory T-cell and/or NK-cell lymphoma (n = 151) consisting of extranodal NK/T-cell tumors other than mycosis fungoides (MF); (ii) non-cytotoxic memory T-cell lymphoma (n = 142) consisting of nodal and cutaneous tumors such as angioimmunoblastic T-cell lymphoma, adult T-cell lymphoma/leukemia and MF; and (iii) anaplastic lymphoma kinase positive anaplastic large cell lymphoma (n = 110) that has unique features and might be regarded as cytotoxic 'naive' T-cell lymphoma. Overall, these three categories were significantly correlated with age of onset, anatomical sites, the level of expression of cytotoxic molecules and CD45RO, and association with Epstein-Barr virus. This concept might provide a new insight enabling further understanding of the interrelationships among WHO T/NK-cell disease entities.
Ichimura
Koichi
K
Department of Pathology and Molecular Diagnostics, Aichi Cancer Center, Nagoya, Japan.
Kagami
Yoshitoyo
Y
Suzuki
Ritsuro
R
Kojima
Masaru
M
Yoshino
Tadashi
T
Ohshima
Koichi
K
Koike
Koichi
K
Kondo
Eisei
E
Taji
Hirofumi
H
Ogura
Michinori
M
Morishima
Yasuo
Y
Akagi
Tadaatsu
T
Takahashi
Toshitada
T
Nakamura
Shigeo
S
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000378:metabolism; D002648:Child; D002675:Child, Preschool; D004273:DNA, Neoplasm / Q000032:analysis; D005260:Female; D005434:Flow Cytometry; D053804:Granzymes; D004854:Herpesvirus 4, Human / Q000302:isolation & purification; D006801:Humans; D007124:Immunoenzyme Techniques; D016130:Immunophenotyping; D017403:In Situ Hybridization; D007694:Killer Cells, Natural / Q000473:pathology* / Q000821:virology; D016411:Lymphoma, T-Cell, Peripheral / Q000276:immunology* / Q000473:pathology* / Q000821:virology; D008297:Male; D008565:Membrane Proteins / Q000032:analysis; D008875:Middle Aged; D039102:Poly(A)-Binding Proteins; D011506:Proteins; D012367:RNA, Viral / Q000032:analysis; D016601:RNA-Binding Proteins / Q000032:analysis; D012697:Serine Endopeptidases / Q000032:analysis; D000074019:T-Cell Intracellular Antigen-1; D014944:World Health Organization
D014408:Biomarkers, Tumor; D004273:DNA, Neoplasm; D008565:Membrane Proteins; D039102:Poly(A)-Binding Proteins; D011506:Proteins; D012367:RNA, Viral; D016601:RNA-Binding Proteins; D000074019:T-Cell Intracellular Antigen-1; C071558:TIA1 protein, human; C509213:GZMB protein, human; D053804:Granzymes; D012697:Serine Endopeptidases