Table of Contents

Venous Sinus Stenosis Diagnosis

Venous sinus stenosis (VSS) is a narrowing of the major dural venous sinuses, typically the transverse and/or sigmoid sinuses, often associated with idiopathic intracranial hypertension (IIH). Diagnosis is based on clinical features and confirmatory imaging and pressure studies.

1. Clinical Suspicion

2. Neuroimaging

MRI + MR Venography (MRV)

CT Venography (CTV)

Digital Subtraction Angiography (DSA) + Manometry

3. Key Diagnostic Criterion

4. Differential Diagnosis

5. Summary Table

Modality Findings Role
MRI/MRV Sinus narrowing, optic sheath distension First-line screening
CT Venography Confirms anatomy, good bone detail Complementary study
DSA + Manometry Direct visualization, pressure gradient measurement Definitive diagnosis