Keyword: Castleman's Disease

ABSTRACT: Castleman disease (CD) is a rare lymphoproliferative disorder with heterogeneous clinical manifestations. This article presents a clinical case of HHV-8–associated multicentric Castleman disease (MCD) in an HIV-negative patient treated at the National Scientific Oncology Center. Diagnostic methods included histological and immunohistochemical evaluation, laboratory investigations, and imaging studies. The choice of therapy is discussed. The patient demonstrated resistance to rituximab monotherapy but achieved a favorable response to R-CHOP chemotherapy. This case highlights the importance of early assessment of HHV-8 status and an individualized approach to treatment selection.