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Sinus wall abnormalities (SWAA): Your sinus wall is a channel on the side of your brain that receives blood from veins within your brain. Some people have conditions that cause increased blood flow that makes noise inside this channel, creating the whooshing sound associated with pulsatile tinnitus.
Up to 25% of patients with pulsatile tinnitus may result from boney anomalies of the sigmoid sinus (dehiscence or diverticula) and is likely the single most common cause. Because of this, the algorithm for diagnosing and treating patients with pulsatile tinnitus has changed significantly.
By discovering new clinical and radiographic features of sigmoid sinus wall anomalies and their association with PT, Eisenman was able to completely resolve PT in thirty-six out of 40 subjects (90%) through a modification of a conventional mastoidectomy approach.
We aimed to determine whether the prevalence of transverse sinus stenosis and sigmoid sinus diverticulum/dehiscence was increased in patients with idiopathic intracranial hypertension and pulsatile tinnitus relative to those without pulsatile tinnitus and a control group.
Venous causes include pathologic abnormalities of the lateral sinus (transverse sinus stenosis and sigmoid sinus wall anomalies), abnormalities and variants of the emissary veins, and anomalies of the jugular bulb and jugular veins (15).
Sinus Wall Abnormalities. These abnormalities include sigmoid sinus diverticulum and dehiscence. The sigmoid sinus is a blood-carrying channel on the side of the brain that receives blood from veins within the brain.
Sinus Wall Abnormalities. The sinus wall acts as a channel on the side of the brain, receiving blood from intracranial veins. Some individuals may have conditions that lead to heightened blood flow within this channel, causing audible whooshing sounds associated with pulsatile tinnitus. Arteriovenous Malformations
Sigmoid sinus wall abnormalities that can cause PT include sigmoid sinus diverticula and sigmoid plate dehiscence or thinning. Coil embolization of sigmoid sinus diverticula is generally well-tolerated and leads to resolution of symptoms in most small series ( online supplemental table 1 ).
Describe clinical and radiographic features of sigmoid sinus wall anomalies (SSWA) associated with pulsatile tinnitus (PT) and determine factors predictive of response to surgery.
Objective: Compare incidence of sigmoid sinus wall abnormalities (SSWAs) and other radiographic abnormalities in patients with pulsatile tinnitus (PT) versus controls. Study design: Retrospective case-control. Setting: Tertiary referral center.