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Spinal arteriovenous malformations: some diagnostic difficulties with illustrative cases
E Byrne1, R M Anderson, K Henderson
1Department of Neurology, St Vincent's Hospital, Melbourne, Vic.
Clinical and Experimental Neurology
|January 1, 1987
Summary
Spinal arteriovenous malformations can cause progressive spinal cord dysfunction. Diagnosis relies on imaging, but negative results don't always exclude this condition, sometimes requiring further investigation.
Area of Science:
- Neurology
- Vascular Surgery
- Radiology
Background:
- Spinal arteriovenous malformations (AVMs) are rare vascular anomalies affecting the spinal cord.
- They often manifest as progressive or stepwise neurological deficits, impacting the spinal cord and conus medullaris.
Observation:
- Diagnosis typically involves high-quality myelography and selective spinal angiography to visualize abnormal spinal vessels.
- Challenges arise with equivocal myelography or negative angiography despite suggestive clinical and myelographic findings.
Findings:
- A negative diagnostic workup does not definitively rule out spinal AVMs in patients with strong clinical symptoms.
- The study highlights diagnostic difficulties and the potential for false negatives in imaging.
Implications:
- Clinicians should consider spinal AVMs even with inconclusive imaging if clinical presentation is highly suggestive.
- Reinvestigation or surgical exploration may be warranted in select cases lacking a definitive diagnosis.
- This underscores the importance of integrating clinical suspicion with diagnostic imaging interpretation.