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[Medulla oblongata compression by tortuous vertebral artery: case report]
No Shinkei Geka. Neurological Surgery
|April 1, 1995
Summary
Compression of the brainstem by tortuous vertebral arteries caused severe neurological deficits in a patient. Surgical decompression, including sectioning dentate ligaments, successfully improved symptoms, highlighting a rare cause of medullary compression.
Area of Science:
- Neurosurgery
- Neurology
- Vascular Neurology
Background:
- Vertebral artery abnormalities can cause neurological compromise.
- Compression of the medulla oblongata is a rare but serious condition.
Observation:
- A 58-year-old woman presented with progressive tetraparesis and sensory disturbances.
- Neurological exam revealed deficits consistent with medullary compression.
- Imaging showed bilateral tortuous vertebral arteries compressing the ventrolateral medulla, distinct from cervical spine ossification (OPLL).
Findings:
- Surgical decompression via suboccipital craniectomy and C1-4 laminectomy was performed.
- Vertebral artery transposition was not feasible due to perforating branches.
- Sectioning dentate ligaments and using Dacron pledgets for pulsatile effect improved medullary decompression.
Implications:
- This case highlights bilateral tortuous vertebral arteries as a cause of medullary compression.
- Early recognition and surgical intervention can lead to significant neurological recovery.
- Increased use of MRI necessitates awareness of this rare etiological factor in medullary compression syndromes.