Cutaneous localization of angioimmunoblastic T‐cell lymphoma may masquerade as B‐cell lymphoma or classical Hodgkin lymphoma: A histologic diagnostic pitfall - Université de Montpellier Accéder directement au contenu
Article Dans Une Revue Journal of Cutaneous Pathology Année : 2019

Cutaneous localization of angioimmunoblastic T‐cell lymphoma may masquerade as B‐cell lymphoma or classical Hodgkin lymphoma: A histologic diagnostic pitfall

Résumé

BACKGROUND: We report the cases of three patients presenting skin lesions whose biopsies showed nodular polymorphic infiltrates consisting of lymphocytes, plasma cells, histiocytes, eosinophils, B blasts, and Hodgkin Reed-Sternberg (HRS)-like cells. Two of them were initially diagnosed as classical Hodgkin lymphoma (cHL), on the other hand, the last one as a B-cell lymphoma. All patients have been treated for angioimmunoblastic T-cell lymphoma (AITL). METHODS: We performed a second review of the skin biopsies with further immunophenotypic molecular analyses. Scrupulous observation revealed, in the background of the three cases, atypical small to medium-sized lymphocytes carrying a CD3+, CD4+ T-cell phenotype and expressing PD1 and CXCL13 follicular helper T-cell markers. The two lesions initially diagnosed as cHL showed scattered HRS-like cells with CD30+, CD15+, PAX5+, CD20-, Epstein Barr Virus (EBV) + classical phenotype. The case initially diagnosed as B-cell lymphoma showed a diffuse B-cell proliferation associated with small B-cell and medium to large-sized B blasts that were positive for EBV. CONCLUSION: Those cases highlighted that atypical T-cells may be obscured by B-cell proliferation mimicking cHL or B-cell lymphoma in cutaneous localization of AITL and confirmed the requirement of collecting clinical information before performing a diagnosis.
Fichier non déposé

Dates et versions

hal-02562577 , version 1 (04-05-2020)

Identifiants

Citer

Vanessa Szablewski, Olivier Dereure, Céline René, Ariane Tempier, Luc Durand, et al.. Cutaneous localization of angioimmunoblastic T‐cell lymphoma may masquerade as B‐cell lymphoma or classical Hodgkin lymphoma: A histologic diagnostic pitfall. Journal of Cutaneous Pathology, 2019, 46 (2), pp.102-110. ⟨10.1111/cup.13382⟩. ⟨hal-02562577⟩
37 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More