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Transverse sinus stenoses persist after normalization of the CSF pressure in IIH
F Bono1, C Giliberto, C Mastrandrea
1Institutes of Neurology, University Magna Graecia, Catanzaro, Italy.
Background:
Bilateral transverse sinus (TS) stenosis has been found in more than 90% of patients with idiopathic intracranial hypertension (IIH).
Objective:
To evaluate whether TS stenosis changed after normalization of CSF pressure in patients with IIH during medical treatment.
Methods:
Fourteen consecutive patients with IIH with bilateral TS stenosis on cerebral MR venography (MRV) during the medical treatment were studied. Patients were followed for over a 6-year period. During the follow-up, patients underwent repeated lumbar punctures (LPs) and cerebral MRV. MRV was always performed before each LP.
Results:
TS stenosis persisted in all the patients during the follow-up. In 9 of 14 (64%) patients with IIH, CSF pressure normalized during medical treatment.
Conclusions:
Transverse sinus (TS) stenoses, as revealed by MR venography, persist in patients with idiopathic intracranial hypertension after normalization of CSF pressure, suggesting the lack of a direct relationship between the caliber of TS and CSF pressure.
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