
Keywords: لکوآنسفالوپاتی چند نفره پیشرفته; Central nervous system; Craniotomy; Crohn disease; Lymphoma; Multiple sclerosis; Natalizumab; Tsyabri; EBV; Epstein-Barr virus; FDA; Food and Drug Administration; HHV; Human herpesvirus; HIV; Human immunodeficiency virus; Ig; Immunoglobulin; LPD; Lymphopr