JOURNAL OF NEUROLOGICAL SCIENCES-TURKISH, cilt.29, ss.640-644, 2012 (SCI İndekslerine Giren Dergi)
Introduction: Progressive Multifocal Leukoencephalopathy(PML) is a rare demyelinating disease of the central nervous system due to reactivation of a latent infection with JC papovavirus. PML predominantly occurs in severely immunosupressed patients, mostly as a late complication of acquired immunodeficiency syndrome and lymphoproliferative disorders. Clinically it is manifested by motor and sensory deficits, ataxia, cognitive impairment and dementia, corresponding to central nervous system (CNS) lesions. It is difficult to distinguish PML clinically from immune-mediated diseases of the CNS, such as multiple sclerosis, neuropsychiatric sistemic lupus erythematosus and CNS vasculitis.