Progressive multifocal leukoencephalopathy - the importance of early diagnosis illustrated in four cases.

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Abstract

Progressive multifocal leukoencephalopathy (PML) is a rare, deadly demyelinating disease of the central nervous system, which is caused by a reactivation of the DNA polyomavirus JC and occurs in immunosuppressed individuals. So far, only 25 cases have been described in patients with SLE and none survived without antiviral therapy and only two cases in RA. We present four additional cases from a defined area, three in SLE, of which one survived without antiviral therapy, and one case in RA, also surviving after reduction of immunosuppressive treatment. In three of these cases, diagnosis could only be confirmed by stereotactical brain biopsy, including the two surviving cases. Thus, this article illustrates the difficulty in diagnosing progressive multifocal leukoencephalopathy, the need for brain biopsy in many cases, the importance of reduced immunosuppression as early as possible and the severe damage progressive multifocal leukoencephalopathy can cause. Furthermore, progressive multifocal leukoencephalopathy might be much more common in SLE than expected with 1 case in 800 patient-years.
Original languageEnglish
Pages (from-to)1036-1041
JournalLupus
Volume17
Issue number11
DOIs
Publication statusPublished - 2008

Subject classification (UKÄ)

  • Rheumatology and Autoimmunity

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