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Chiari I malformation: a review of 43 patients
Insights
Diagnosis of Chiari I malformation is faster in children and improved after MRI availability. Surgery benefits patients, particularly those with hydrosyringomyelia, with minimal complications.
Area of Science:
- Neurosurgery
- Neurology
- Pediatric Neurology
Background:
- Chiari I malformation presents with varied symptoms and diagnostic challenges.
- Timely diagnosis and management are crucial for patient outcomes.
- Hydrosyringomyelia and scoliosis are potential complications.
Purpose of the Study:
- To review the presentation, diagnosis, management, and outcomes of Chiari I malformation patients.
- To assess factors influencing diagnostic delay.
- To evaluate surgical outcomes and complication rates.
Main Methods:
- Retrospective review of 43 consecutive Chiari I malformation patients managed by a single surgeon over 12 years.
- Analysis of presentation, diagnosis timelines, and management strategies.
- Correlation of pre-operative factors with post-operative outcomes.
Main Results:
- Diagnostic delay was shorter in pediatric patients and decreased significantly after 1985 with MRI availability.
- Patients without hydrosyringomyelia were less likely to develop scoliosis.
- Surgery led to significant improvement in symptoms and signs, especially with hydrosyringomyelia.
Conclusions:
- Magnetic resonance imaging has improved diagnostic timelines for Chiari I malformation.
- Surgical intervention offers significant benefits for Chiari I malformation patients, particularly those with associated hydrosyringomyelia.
- Chiari I malformation surgery is safe with minimal permanent injury; its effect on scoliosis requires further investigation.
Abstract:
We have reviewed the presentation, diagnosis, management, and outcome of 43 consecutive patients with the Chiari I malformation who were evaluated over a 12-year period and were managed by a single surgeon. The delay from the time of presentation to that of diagnosis was significantly less in the pediatric group when compared to the adult group. Also, the delay in diagnosis before 1985 was significantly longer than after 1985, the year magnetic resonance imaging became widely available in clinical practice. We were able to show the patients who did not have hydrosyringomyelia were unlikely to develop scoliosis. Surgery resulted in overall improvement in both symptoms and signs, but the improvement in symptoms was more marked than the improvement in signs. There was positive correlation between improvement in hydrosyringomyelia and the improvement in signs and symptoms. Surgery was associated with no significant permanent injury as a result of the procedure in any of the patients. The effect of Chiari surgery on scoliosis was inconclusive.