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Central nervous system involvement in Leber's optic neuropathy
1Abteilung Neurologie und Radiologie, Klinikum Grosshadern, München, Germany.
Journal of Neurology
|January 1, 1993
Summary
Leber hereditary optic neuropathy (LHON) can cause brainstem issues like Parinaud's syndrome. MRI showed brainstem lesions in an LHON patient, but clinical symptoms persisted despite imaging improvement.
Area of Science:
- Neuro-ophthalmology
- Neuroimaging
- Mitochondrial genetics
Background:
- Leber hereditary optic neuropathy (LHON) is a maternally inherited mitochondrial DNA disease.
- LHON typically presents with acute or subacute visual loss.
- Brainstem involvement is an uncommon manifestation of LHON.
Observation:
- A 23-year-old male with LHON and a known mitochondrial DNA mutation developed neurological deficits.
- Symptoms included Parinaud's syndrome and oculopalatal myoclonus, indicating brainstem involvement.
- Neuroimaging revealed a brainstem lesion on MRI, correlating with a CT scan finding.
Findings:
- The brainstem lesion on MRI showed a high signal intensity, without contrast enhancement.
- A 5-year follow-up demonstrated partial resolution of MRI findings.
- Clinical improvement did not accompany the observed changes in MRI findings.
Implications:
- This case highlights rare brainstem complications in LHON patients.
- MRI findings suggested demyelination, but further investigations were inconclusive.
- The discrepancy between imaging and clinical status underscores the complexity of LHON manifestations.