Persistence of Transverse Sinus Stenosis After Lumbar Puncture in Idiopathic Intracranial Hypertension (IIH) (.pdf)

Diffuse or focal distal stenosis of both transverse venous sinuses is a classic sign of raised intracranial pressure (ICP), particularly IIH. Although some stenoses result from intrinsic sinus anomalies and are a primary cause of intracranial hypertension, others result from external compression of the distal transverse sinus and are reversible with treatment of increased ICP or after lumbar puncture (LP). Our goal was to evaluate transverse sinus stenosis (TSS) immediately after the diagnostic LP in patients with IIH.