Primary central nervous system lymphoma involving the optic chiasm in AIDS

Objective: To report visual loss resulting from chiasmal involvement by pri mary central nervous system lymphoma (PCNSL). Materials and Methods: Case report. Results: A patient with the acquired immune deficiency syndrome (AIDS) pres ented with visual loss resulting front PCNSL involving the optic chiasm. Th e clinical findings, neuroimaging, pathology, and treatment of this patient are described. Conclusions: Although rare, clinicians should consider PCNSL in the differe ntial of a hypothalamic/chiasmal mass, especially in a patient with AIDS.