与内耳道血管环存在相关的突发性感觉神经性听力损失。案例报告

S. Șerban, Arthur Weisman
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引用次数: 0

摘要

摘要血管环是指小脑前下动脉或其分支在内耳道中的轨迹异常。Chavda放射学分类根据内耳道水平处环的穿透深度确定了三种类型的轨迹。本文介绍了一例26岁的患者因左耳突发性感音神经性听力损失和头晕而住进耳鼻喉科。3D Fiesta-C轴序列MRI显示内耳道内存在血管环,但不超过一半。听力损失发生了不利的演变,在使用类固醇和血管舒张剂治疗后没有恢复。突发性感音神经性听力损失可能是内耳道中存在血管环的结果。如果环至少是II型,则听力损失恢复的预后较差。
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Sudden Sensorineural Hearing Loss Associated with the Presence of a Vascular Loop in the Internal Auditory Canal. Case Report
Abstract The vascular loop refers to a trajectory abnormality of the antero-inferior cerebellar artery or its branch in the internal auditory canal. The Chavda radiological classification identifies three types of trajectory depending on the depth of penetration of the loop at the level of the internal auditory canal. The article presents the case of a 26-year-old patient admitted to the ENT department for left ear sudden sensorineural hearing loss and dizziness. The 3D Fiesta-C axial sequence MRI shows the presence of the vascular loop inside the internal auditory canal, without exceeding half of it. The hearing loss had an unfavourable evolution, without recovery after treatment with steroids and vasodilators. Sudden sensorineural hearing loss may be a consequence of the presence of the vascular loop in the internal auditory canal. The prognosis for recovery from hearing loss is poor if the loop is at least type II.
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