[Progressive multifocal leukoencephalopathy and rheumatic disease]

C Kneitz1, H Wiendl

  • 1Schwerpunkt für Rheumatologie und Klinische Immunologie, Medizinische Klinik und Poliklinik II der Universität Würzburg, Klinikstrasse 2, 97070 Würzburg, Deutschland. kneitz_c@klinik.unik-wuerzburg.de

Insights

Progressive multifocal leukoencephalopathy (PML), a rare CNS disease caused by JC virus, affects immunocompromised patients. PML is increasingly reported in rheumatology patients, prompting diagnostic consideration.

Area of Science:

  • Neurology
  • Virology
  • Rheumatology

Context:

  • Progressive multifocal leukoencephalopathy (PML) is a rare, fatal demyelinating CNS disease caused by JC virus, primarily in immunocompromised individuals.
  • Increasing reports link PML to rheumatic diseases, raising questions about direct causation versus immunosuppressive therapy effects.

Purpose:

  • To highlight the importance of considering PML in the differential diagnosis of neurological symptoms in rheumatology patients.
  • To emphasize the need for prompt diagnostic evaluation when PML is suspected.

Summary:

  • PML, a JC virus-induced demyelinating disease, affects immunocompromised individuals.
  • Its occurrence in patients with rheumatic diseases, including systemic lupus erythematosus, is noted.
  • The exact relationship between rheumatologic conditions, immunosuppressive treatments, and PML remains under investigation.

Impact:

  • PML should be considered in the differential diagnosis of non-specific neurological symptoms in patients with rheumatic diseases.
  • Diagnostic procedures like MRI, CSF analysis (PCR), and brain biopsy are crucial for suspected PML cases.
  • This underscores the interdisciplinary approach needed for managing complex neurological complications in rheumatology.

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