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To inform on the incidence of high jugular bulb and dehiscent high jugular bulb, and the symptoms related to these vascular anomalies.
A retrospective analysis was performed of temporal bone computed tomography scans of 3285 patients who attended our clinic with various symptoms. The medical records of patients with high jugular bulb and dehiscent high jugular bulb were analysed, and the clinical findings reviewed. Patients with dehiscent high jugular bulb were evaluated for hearing loss with pure tone audiometry.
High jugular bulb was evident in 730 patients (22 per cent) (510 right-sided, 220 left-sided; p < 0.01). Twenty-six high jugular bulb patients had dehiscent high jugular bulb. Ten of these 26 patients had vertigo, 15 had tinnitus and 1 had hearing disturbance. Ten dehiscent high jugular bulb patients had undergone pure tone audiometry: seven patients had conductive hearing loss, two had sensorineural hearing loss and one had mixed hearing loss.
The incidences of high jugular bulb and dehiscent high jugular bulb were 22 per cent and 3.5 per cent, respectively. Tinnitus was the most common symptom of all patients. Dehiscent high jugular bulb was associated with various degrees of hearing loss, but not hearing disturbance.
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