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1.
Rev Med Interne ; 43(5): 301-311, 2022 May.
Article in French | MEDLINE | ID: mdl-34895767

ABSTRACT

HHV-8 is an oncogenic Gammaherpesvirinae discovered in 1994 during the HIV pandemic. It is the causative agent of Kaposi's sarcoma, and is also associated with the occurrence of several aggressive B lymphoproliferative disorders. Most of them occur in an immunosuppression setting, usually due to HIV infection. Multicentric HHV8-associated Castleman's disease and KSHV Inflammatory Cytokine Syndrome (KICS) are primarily reactive entities with prominent systemic features. They illustrate the cytokinic storm induced by HHV-8 in its cell host. On the other hand, HHV-8 can drive proliferation and lymphomagenesis of its plasmablastic cell host, and is associated with a risk to develop aggressive lymphomas with plasmacytic differenciation. Primary effusion lymphoma usually localizes in body cavities and may affect other extra-nodal sites ; its prognostic is poor. Diffuse large B-cell lymphoma HHV-8, NOS affect more commonly nodes and blood and evolve from infected cell of HHV-8 associated Castleman disease. On the contrary, germinotropic lymphoproliferative disorders presents mainly as localized adenopathy with indolent course, and show polyclonality. Histology plays a key role in distinguishing these different entities and need expert reviewing, especially since they may be associated with each other. Besides lymphoproliferative disorders, HHV8 is associated with various hematological manifestations. The aim of this review is to provide an update on the presentation, diagnosis, and management of immunologic and hematologic complications associated with HHV-8.


Subject(s)
Castleman Disease , HIV Infections , Hematologic Diseases , Herpesvirus 8, Human , Lymphoproliferative Disorders , Sarcoma, Kaposi , Castleman Disease/diagnosis , Castleman Disease/epidemiology , Castleman Disease/therapy , Hematologic Diseases/diagnosis , Hematologic Diseases/epidemiology , Hematologic Diseases/etiology , Humans , Lymphoproliferative Disorders/diagnosis , Lymphoproliferative Disorders/pathology , Sarcoma, Kaposi/pathology
2.
Rev Med Interne ; 40(3): 197-198, 2019 Mar.
Article in French | MEDLINE | ID: mdl-29310967
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