Two Atypical Cases of Cutaneous Gamma/Delta T-Cell Lymphomas.

Autor: Caudron, A., Bouaziz, J.D., Battistella, M., Sibon, D., Lok, C., Leclech, C., Ortonne, N., Molinier-Frenkel, V., Bagot, M.
Zdroj: Dermatology (10188665); Sep2011, Vol. 222 Issue 4, p297-303, 7p, 3 Color Photographs, 2 Black and White Photographs, 1 Chart
Abstrakt: Cutaneous γ/δ T-cell lymphoma (CGD-TCL) is a recent entity described in the newly revised World Health Organization-European Organization for Research and Treatment of Cancer classification of cutaneous lymphomas, and is characterized by the γ/δ T-cell receptor expression on atypical lymphocytes. Only a few cases of primary CGD-TCL have been reported, with an extremely aggressive course (median survival time of 15 months). We describe 2 atypical cases of CGD-TCL. The first case was initially misdiagnosed as an inflammatory panniculitis due to the granulomatous infiltrate on the skin biopsy specimen. Diagnosis was confirmed using δ PCR that revealed γ/δ T-cell clonal expansion. The evolution was marked by predominant γ/δ T-cell infiltrate with diffuse body fat involvement as seen on positron emission tomography-computed tomography. The second case is the first described Epstein-Barr virus (EBV)-associated CGD-TCL with a rapidly fatal evolution. CGD-TCL is also a heterogeneous entity and δ PCR and EBV-encoded RNA probe to detect an EBV latent infection may help diagnose and characterize these cutaneous lymphomas. Copyright © 2011 S. Karger AG, Basel [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index