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Midbrain hemorrhage presenting with oculomotor nerve palsy: case report
Hidekatsu Mizushima1, Tamotsu Seki
1Department of Neurosurgery, Kuniyoshi Hospital, Tokyo, Japan.
Surgical Neurology
|January 9, 2003
Summary
A rare case of isolated oculomotor nerve palsy resulted from a midbrain hemorrhage. Magnetic resonance imaging (MRI) confirmed the diagnosis, highlighting its utility in detecting small hemorrhages.
Area of Science:
- Neurology
- Ophthalmology
- Radiology
Background:
- Reports a rare case of isolated oculomotor nerve palsy.
- Investigates a midbrain hemorrhage as the etiology.
Observation:
- A 75-year-old male presented with diplopia and left ptosis.
- Neuro-ophthalmic examination revealed limited left downward eye movement and right eye convergence.
- Magnetic resonance imaging (MRI) identified an anterior tegmental midbrain hematoma.
Findings:
- Focal midbrain hemorrhage can incidentally cause third nerve palsy.
- Conservative treatment led to gradual resolution of symptoms over two weeks.
- MRI is crucial for diagnosing small midbrain hemorrhages.
Implications:
- This case expands the known causes of isolated oculomotor nerve palsy.
- Highlights the diagnostic value of MRI in subtle neurological presentations.
- Contributes to understanding the neuro-anatomical basis of third nerve palsies.