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2 "Hearing loss, sudden"
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Case Reports
Bilateral Sudden Hearing Loss Caused by Basilar Artery Dissection: A Case Report
Ho Byung Lee, Jieun Roh, Hyun Min Lee, Jae-Hwan Choi
Res Vestib Sci. 2021;20(4):151-155.   Published online December 15, 2021
DOI: https://doi.org/10.21790/rvs.2021.20.4.151
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AbstractAbstract PDF
Bilateral sudden sensorineural hearing loss (SNHL) is rare, but a possible symptom of vertebrobasilar ischemia. A 69-year-old female patient with hypertension and atrial fibrillation presented with bilateral sudden hearing loss and vertigo without other neurological symptoms. On examination, she had left-beating horizontal nystagmus with positive head impulse on the left side. Pure tone audiometry revealed severe SNHL on both sides. Brain computed tomography angiography showed a dissection in the proximal portion of the basilar artery (BA) with occlusion of the mid-BA and bilateral anterior inferior cerebellar arteries (AICA), which confirmed on transfemoral cerebral angiography (TFCA). Left common carotid angiography demonstrated retrograde blood flow into the BA and right AICA via the left posterior communicating artery. During TFCA, her right hearing loss dramatically improved. Nine days later, follow-up TFCA showed an improvement of antegrade flow of the BA and AICA. We suggest that vertebrobasilar ischemia can be suspected in patients with bilateral sudden SNHL who present with risk factors for stroke.
A Case of Cerebellopontine Angle Osteoma Causing Sudden Hearing Loss with Vertigo
Woo Jin Bae, Seung Hern Ha, Sun Min Park, Chang Woo Kim
Res Vestib Sci. 2009;8(1):66-69.
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AbstractAbstract PDF
Osteomas arising from the internal auditory canal (IAC) and locating in the cerebellopontine angle (CPA) are rare. These tumors may cause compression of the IAC with varying degree of hearing loss, vertigo, and tinnitus but sometimes asymptomatic. Here we present a 60-year-old female patient presented with a hearing loss of sudden onset in her right ear and recurrent dizziness of whirling type. Magnetic resonance imaging and computed tomography revealed CPA osteoma arising from the porus of the IAC. Osteomas should be considered as differential diagnosis in patients with sudden hearing loss and vertigo. Key Words: Osteoma; Cerebellopontine angle; Hearing Loss, Sudden

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