Comparative case series of exostoses and osteomas of the internal auditory canal.
Comparative case series of exostoses and osteomas of the internal auditory canal.
复制标题
内耳道外生骨疣和骨瘤的比较病例系列。
DOI：
10.1177/000348941112000407
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Nguyen,QuyenT
中科院分区：
文献类型：
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作者：
Baik,FredM;Nguyen,Linda;Doherty,JoniK;Harris,JeffreyP;Mafee,MahmoodF;Nguyen,QuyenT
骨外骨瘤和骨瘤是耳道的良性骨性病变。虽然它们在外耳道很常见，但在内耳道(IAC)却很少见，很难区分。在这篇文献回顾和病例介绍中，我们定义了放射学和组织学标准来区分外生性骨软骨瘤和IAC骨瘤。本文报告2例外生骨软骨瘤和1例IAC骨瘤。患者1出现致残性眩晕，发现双侧外突，右侧有神经撞击。通过乙状窦后开颅切除右侧骨痂后，患者的症状在一年多内完全消失。例2表现为双侧搏动性耳鸣和眩晕，并发现双侧IAC外生骨痂。患者3出现听力损失和耳鸣，最终发现单侧IAC骨瘤。由于症状轻微，2号和3号患者无需手术。我们认为，IAC骨瘤可以通过高分辨率计算机断层扫描中的骨髓放射学证据或组织学分析中的纤维血管通道的存在来区分。这些罕见实体的管理是根据患者的症状进行定制的。
Exostoses and osteomas are benign bony lesions of the auditory canal. Although common in the external auditory canal, they are rare and difficult to distinguish in the internal auditory canal (IAC). In this literature review and case presentation, we define radiologic and histologic criteria to differentiate exostoses from osteomas of the IAC. Two patients with exostoses and 1 patient with an osteoma of the IAC are described here. Patient 1 presented with disabling vertigo and was found to have bilateral exostoses with nerve impingement on the right. After removal of the right-sided exostoses via retrosigmoid craniotomy, the patient had complete resolution of her symptoms over 1 year. Patient 2 presented with bilateral pulsatile tinnitus and vertigo and was found to have bilateral IAC exostoses. Patient 3 presented with hearing loss and tinnitus, and a unilateral IAC osteoma was ultimately discovered. Because of the mild nature of their symptoms, patients 2 and 3 were managed without surgery. We show that IAC osteomas can be differentiated from exostoses by radiographic evidence of bone marrow in high-resolution computed tomography scans, or by the presence of fibrovascular channels on histologic analysis. Management of these rare entities is customized on the basis of patient symptoms.