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Hemodynamic patterns of chronic cerebrospinal venous insufficiency in multiple sclerosis. Correlation with symptoms
I Bartolomei1, F Salvi, R Galeotti
1Center for Rare and Neuroimmunitary Diseases, Department of Neurological Science, Bellaria Hospital, Bologna, Italy.
Aim:
Chronic cerebrospinal venous insufficiency (CCSVI) is associated with multiple sclerosis (MS). CCSVI is detected by transcranial and extracranial color-Doppler high-resolution examination (TCCS-ECD) and venography that permit to identify five types of venous malformations and four major (A-D) hemodynamic patterns of anomalous extracranial-extravertebral venous outflow. We investigated possible correlation between such hemodynamic patterns and both the symptoms at onset and clinical course in patients with MS and CCSVI.
Methods:
TCCS-ECD, selective venography and clinical records of 65 patients affected by definite MS and CCSVI were reviewed.
Results:
The four hemodynamic patterns of CCSVI were unevenly (P<0.0001) distributed with respect to the types of clinical presentation and course. In particular the Type A or B patterns were common in patients with onset of optic neuritis, but rare in patients presenting with spinal cord symptoms who typically showed a type D pattern. As well, the type A or type B hemodynamic were more common in patients with relapsing remitting course than in patients with secondary progressive course and rare in patients with primary progressive course. The C hemodynamic pattern was not observed in patients with primary progressive course who showed a remarkable prevalence of the type D pattern.
Conclusion:
The distribution of venous malformations and the resulting hemodynamic pattern show correlation with symptoms at onset and clinical course in patients with MS and CCSVI.
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