Why would the incidence of HIV-associated Hodgkin lymphoma increase in the setting of improved immunity?

Antiretroviral Therapy, Highly Active Apoptosis/drug effects CD4 Antigens/immunology CD40 Antigens/immunology CD40 Ligand/immunology HIV Infections/complications,drug therapy Hodgkin Disease/complications,immunology Humans Models, Biological Reed-Sternberg Cells/immunology,pathology Signal Transduction/immunology T-Lymphocytes/drug effects,immunology

CD4 Antigens CD40 Antigens CD40 Ligand