Progressive multifocal leukoencephalopathy in a child with acquired immunodeficiency syndrome (AIDS)

Area of Science:

• Neurology
• Infectious Diseases
• Immunology

Background:

• Progressive multifocal leukoencephalopathy (PML) is a rare, opportunistic infection of the central nervous system.
• PML is caused by the JC virus (JCV) and primarily affects individuals with compromised immune systems, such as those with Acquired Immunodeficiency Syndrome (AIDS).
• Demyelination in the brain's white matter is a hallmark of PML, leading to severe neurological deficits.

Observation:

• A 10-year-old boy diagnosed with AIDS presented with subacute onset of cerebellar dysfunction, cranial nerve palsies, and cognitive decline.
• Neuroimaging revealed characteristic findings: a focal, non-enhancing hypodense lesion on CT scan and T2 hyperintense lesions on MRI in the cerebellum and white matter.
• Brain biopsy confirmed the diagnosis by showing typical histopathological features of PML.

Findings:

• The case demonstrates a rare presentation of PML in a pediatric patient with advanced HIV/AIDS.
• Cerebellar involvement and multiple cranial nerve deficits were prominent clinical features.
• Histological confirmation solidified the diagnosis, identifying characteristic viral inclusions and demyelination.

Implications:

• This case underscores the importance of considering PML in the differential diagnosis of children with AIDS experiencing progressive neurological symptoms.
• Early recognition and diagnosis of PML in immunocompromised children are crucial for timely management and potentially improving outcomes.
• Further research into the specific clinical and radiological manifestations of PML in pediatric populations with HIV is warranted.