[Primary central nervous system lymphoma as a neurological manifestation of AIDS stage].

In patients infected with human immunodeficiency virus (HIV), the risk of developing non-Hodgkin's lymphoma is over 100 times greater than with noninfected persons. Primary central nervous system lymphoma as a complication of the acquired immunodeficiency syndrome (AIDS) occurs in up to 2.4% of all cases and is strongly associated with the Epstein-Barr virus. The prognosis is very poor, with a mean survival time of 21 to 27 days without therapy and up to 119 days with radiation therapy. We describe the course of seven AIDS patients with histologically proven primary central nervous system lymphoma and present a review of clinical symptoms, diagnosis, and therapy. The main criteria for differential diagnosis from other secondary neuromanifestations such as cerebral toxoplasmosis, progressive multifocal leukoencephalopathy, abscesses, and infarctions are described.