Abstract
Pulsatile tinnitus is a rhythmic type of tinnitus. Most cases are caused by vascular disorders and present as synchronous with the patient's heartbeat. A dilated mastoid emissary vein may cause pulsatile tinnitus. Here, we report the first case of bilateral pulsatile tinnitus caused by dilated bilateral mastoid emissary vein. The patient suffered from bilateral pulsatile tinnitus for 2 years. His bilateral tinnitus disappeared temporarily when the bilateral mastoid processes were compressed. Temporal bone computed tomographic (CT) showed the bilateral dilated mastoid emissary canals. Cranial Magnetic resonance venograms (MRV) showed the bilateral dilated mastoid emissary veins. We explained the risk of surgery to the patient. Because the patient could tolerate his tinnitus and did not have a hemangioma or tumor, he did not choose to undergo surgery.
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