Venous anomalies are the most commonly identified abnormality by imaging in the work-up for pulse synchronous tinnitus. Potential diagnoses include idiopathic intracranial hypertension, sigmoid sinus wall anomalies, transverse and sigmoid sinus stenosis, jugular bulb anomalies, and prominent posterior fossa emissary veins. These causes are discussed in detail along with the association between sigmoid sinus wall anomalies and idiopathic intracranial hypertension.
Keywords: Dehiscent jugular bulb; Dehiscent sigmoid sinus; Idiopathic intracranial hypertension; Posterior fossa emissary veins; Sigmoid sinus diverticulum; Tinnitus.
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