Department of Otorhinolaryngology, Ankara Numune Training and Research Hospital, Ankara, Turkey.
Department of Radiology, Ankara Numune Training and Research Hospital, Ankara, Turkey.
J Int Adv Otol. 2020 Dec;16(3):373-377. doi: 10.5152/iao.2020.7508.
This study aimed to compare the Eustachian tube (ET) and the paratubal structures between the two sides in subjects with unilateral acquired cholesteatoma and a healthy contralateral ear to determine if there are anatomical differences.
Of the 217 patients with cholesteatoma evaluated, 36 patients with unilateral cholesteatoma were included in the study. All of the patients had a healthy contralateral ear with no history of surgery. Nine different paratubal parameters were measured through contrast-enhanced magnetic resonance imaging (MRI). The measurements of the ear with cholesteatoma were compared with those of the healthy ear.
The bimucosal thickness of the ET lumen, the mucosal thickness of the pharyngeal orifice, the lengths and diameters of the tensor veli palatini muscle and the levator veli palatini muscle, the diameter of the pharyngeal orifice of the ET, the diameter of the lateral pharyngeal recess mucosal thickness, and the diameter between the posterior border of the inferior nasal concha and the pharyngeal orifice of the ET were measured in MRI scans. No statistically significant difference was observed between the healthy ear and the ear with cholesteatoma for any of the parameters measured (p>0.05).
We did not observe any anatomical differences in the measurements of the ET and the paratubal structures on MRI scans. Although ET dysfunction is considered to be the leading etiologic factor in acquired cholesteatoma, the ET and the paratubal structures may not exhibit an anatomic difference between the ear with cholesteatoma and the healthy contralateral ear.
本研究旨在比较单侧后天性胆脂瘤患者和健康对侧耳的咽鼓管（ET）和副管结构，以确定是否存在解剖差异。
在 217 例接受评估的胆脂瘤患者中，纳入了 36 例单侧胆脂瘤患者。所有患者均有健康的对侧耳，无手术史。通过对比增强磁共振成像（MRI）测量了 9 个不同的副管参数。对患有胆脂瘤的耳朵进行了测量，并与健康耳朵进行了比较。
在 MRI 扫描中测量了 ET 管腔的双黏膜厚度、咽口的黏膜厚度、腭帆张肌和腭帆提肌的长度和直径、ET 咽口的直径、ET 咽口外侧咽隐窝黏膜厚度的直径以及下鼻甲后缘与 ET 咽口之间的直径。在任何测量参数方面，健康耳与胆脂瘤耳之间均无统计学差异（p>0.05）。
我们在 MRI 扫描中没有观察到 ET 和副管结构的任何测量值存在解剖差异。尽管 ET 功能障碍被认为是后天性胆脂瘤的主要病因，但 ET 和副管结构在胆脂瘤耳和健康对侧耳之间可能没有解剖差异。
