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Neuro-ophthalmic findings in progressive multifocal leukoencephalopathy
F Wein1, G S Francis, M S Gans
1Department of Ophthalmology, McGill University Hospital Centre, Montreal, Que.
Canadian Journal of Ophthalmology. Journal Canadien D'Ophtalmologie
|September 19, 1998
Summary
Progressive multifocal leukoencephalopathy (PML) in HIV patients often presents with neuro-ophthalmic symptoms. Homonymous hemianopia is the most frequent sign, indicating the need for prompt PML diagnosis in immunocompromised individuals.
Area of Science:
- Neuroscience
- Immunology
- Ophthalmology
Background:
- Progressive multifocal leukoencephalopathy (PML) is a central nervous system demyelinating disease affecting immunodeficient individuals, notably those with HIV.
- PML can be an initial manifestation of HIV infection, often impacting visual pathways.
- Neuro-ophthalmic signs and symptoms are common in PML patients.
Purpose of the Study:
- To investigate the clinical, radiographic, and histopathological features of PML.
- To identify common neuro-ophthalmic manifestations in patients with PML.
Main Methods:
- Retrospective chart review of 13 patients diagnosed with PML between 1987 and 1995.
- Diagnosis confirmed by clinical presentation and neuroimaging (CT/MRI) showing characteristic white-matter lesions.
- Neuro-ophthalmic findings assessed through clinical examinations; pathological confirmation in two cases.
Main Results:
- Homonymous hemianopia was the most prevalent finding, observed in 38% of patients.
- Other observed neuro-ophthalmic signs included nystagmus, diplopia with cranial nerve palsy, and cortical blindness.
- Brainstem involvement, an atypical site for PML, was noted in one patient.
Conclusions:
- Neuro-ophthalmic findings in immunocompromised patients warrant consideration for PML diagnosis.
- Homonymous hemianopia is a particularly significant indicator for potential PML in this population.