Peripheral T-cell lymphoma not otherwise specified (PTCL-NOS)

2009-07-01   Maria Ciccone , Francesco Cavazzini , Gian Matteo Rigolin , Antonio Cuneo 

1.Hematology Section, Department of Biomedical Sciences, University of Ferrara, Corso Giovecca 203, Ferrara, Italy

Clinics and Pathology

Disease

Peripheral T-cell lymphomas not otherwise specified (PTCL-NOS) include a heterogeneous group of diseases involving lymph nodes and extra nodal sites deriving from the clonal expansion of mature T-lymphocytes bearing clonally rearranged TCR genes.

Phenotype stem cell origin

The cell of origin is an activated mature CD4+ lymphocyte.
The phenotype is usually CD4+/CD8-, TCRβ+ whereas the expression of CD7 and CD5 may be low. Occasionally, CD30 may be positive.

Epidemiology

There is geographic variation in the incidence of T-cell lymphoma. PTCL-NOS accounts for approximately 4-7% of all non Hodgkins lymphomas and for 30-70% of all mature T-cell lymphomas.

Clinics

The disease runs an aggressive clinical course.

Pathology

The proliferation effaces the lymph node architecture, with paracortical or diffuse growth pattern. The cells are medium-to-large sized, with irregular nucleus, distinct nucleoli. Mitotic figures may be numerous.

Treatment

Anthracycline-based regimes such as CHOP yields unsatisfactory results with lower CR rates than in B-cell diffuse large cell lymphomas and high relapse rate. Intensive regimens such as hyperCVAD with or without autologus bone marrow transplantation may be effective in this type of lymphoma, though the superiority of this approach over conventional treatment has not been definitely proven.

Prognosis

Reported failure free survival rates ranged between 12 and 45% (Armitage, 2006).

Bibliography

Pubmed IDLast YearTitleAuthors
186334322008High-resolution analysis of chromosome copy number alterations in angioimmunoblastic T-cell lymphoma and peripheral T-cell lymphoma, unspecified, with single nucleotide polymorphism-typing microarrays.Fujiwara SI et al
191180302009Array comparative genomic hybridization analysis of PTCL-U reveals a distinct subgroup with genetic alterations similar to lymphoma-type adult T-cell leukemia/lymphoma.Nakagawa M et al
183416372008Cytogenetic abnormalities and clinical correlations in peripheral T-cell lymphoma.Nelson M et al
116738352001p53 over-expression identifies a subset of nodal peripheral T-cell lymphomas with a distinctive biological profile and poor clinical outcome.Pescarmona E et al
162103422006T-cell non-Hodgkin lymphoma.Rizvi MA et al

Citation

Maria Ciccone ; Francesco Cavazzini ; Gian Matteo Rigolin ; Antonio Cuneo

Peripheral T-cell lymphoma not otherwise specified (PTCL-NOS)

Atlas Genet Cytogenet Oncol Haematol. 2009-07-01

Online version: http://atlasgeneticsoncology.org/haematological/2096/peripheral-t-cell-lymphoma-not-otherwise-specified-(ptcl-nos)

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