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[Ocular toxoplasmosis in patients with acquired immunodeficiency syndrome].

Ocular toxoplasmosis is an uncommonly reported complication in patients with acquired immunodeficiency syndrome. Three patients with human immunodeficiency virus (HIV) infection and ocular toxoplasmosis are reported. In two of them, cerebral toxoplasmosis was associated. Ocular involvement presented as exudative chorioretinitis, bilateral in 2 cases and unilateral in 1. The diagnosis was made on the basis of ocular disease associated with lesions consistent with toxoplasmosis of central nervous system (CNS) and response to antitoxoplasma treatment in one case, and ocular disease with rising antitoxoplasma serologic titers in the remaining two. Initial therapy included pyrimethamine plus sulfadiazine in 2 cases and pyrimethamine plus clindamycin in 1. The 2 patients treated with sulfadiazine showed hypersensitivity features, and clindamycin had to be substituted. The response to therapy was favorable, although one patient died few days after the development of CNS lesions. When chorioretinitis develops in a patient with HIV infection, ocular toxoplasmosis should be considered. As CNS involvement is commonly associated and relapse after the withdrawal of therapy is likely, these patients should be treated as those with isolated toxoplasma encephalitis.