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Rapidly progressive cerebellar ataxia in West Wales

Khalid Ali1, Reem Amin, Kathir G Yoganathan

  • 1Neurology Department, Morriston Hospital, Swansea, UK.

BMJ Case Reports
|November 23, 2013
PubMed

Insights

Progressive multifocal leukoencephalopathy (PML), a severe brain disease caused by JC virus, affects immunocompromised individuals. Treatment focuses on immune reconstitution, as demonstrated in an HIV-positive patient with cerebellar ataxia.

Area of Science:

  • Neuroscience
  • Infectious Diseases

Background:

  • Progressive multifocal leukoencephalopathy (PML) is a severe demyelinating central nervous system disease caused by JC virus infection, often leading to fatal or disabling outcomes.
  • PML occurs in patients with cell-mediated immunosuppression, historically linked to hematological malignancies and rheumatological diseases, with a significant increase in incidence due to the HIV epidemic.
  • The advent of monoclonal antibody therapies, such as natalizumab for multiple sclerosis, has also been associated with PML development.

Observation:

  • Clinical presentation includes cognitive decline, visual disturbances, and hemiparesis.
  • Diagnosis is typically established through clinicoradiological findings and detection of JC virus DNA in cerebrospinal fluid (CSF) via PCR, with brain biopsy rarely required.

Findings:

  • The case study details a 47-year-old male presenting with progressive cerebellar ataxia, confirmed as PML.
  • Investigations revealed the patient was HIV positive, highlighting a common risk factor for PML.
  • Literature review on PML management and presentation is included.

Implications:

  • Immune reconstitution is the primary therapeutic strategy for managing PML.
  • Understanding the diverse etiologies and clinical presentations of PML is crucial for timely diagnosis and management.
  • The association of PML with both viral infections and iatrogenic immunosuppression underscores the importance of monitoring immune status in at-risk populations.

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