Among the secondary problems of patients with the human immune deficiency v
irus (HIV) infection are lymphadenopathy, atypical lymphoproliferations, an
d malignant transformations of lymphoid, muscle, and epithelial cells cause
d by infection with Epstein-Barr virus (EBV). The lymphoproliferative disea
ses associated with EBV infection include lymphocytic interstitial pneumoni
tis, lymphomas of primary and extra-nodal sites, such as the central nervou
s system (CNS), and mucosa-associated lymphoid tissue (MALT). EBV infection
causes these diseases through a combination of mechanisms including use of
virus-encoded transforming genes, stimulation of diverse cytokines, and in
teraction with receptors for the tumor necrosis factor (TNF) family of cyto
kines. (C) 2001 Editions scientifiques et medicales Elsevier SAS.