Park Jonas J-H, Shen Anmin, Loberg Christina, Westhofen Martin
Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital Aachen, RWTH Aachen University, Aachen, Germany.
Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital Aachen, RWTH Aachen University, Aachen, Germany.
Am J Otolaryngol. 2015 May-Jun;36(3):347-51. doi: 10.1016/j.amjoto.2014.12.006. Epub 2014 Dec 24.
High jugular bulb (HJB) can erode inner ear structures creating a jugular bulb related inner ear dehiscence (JBID). The aim of this study was to analyze the relationship between the position of jugular bulb (JB) and JBID using high-resolution computed tomography (HRCT).
In this retrospective study HRCT images of 552 ears of 276 patients with hearing loss, otogenic vertigo, tinnitus or idiopathic peripheral facial nerve paralysis were analyzed. HJB type-1 was defined when JB dome reached above the inferior part of the round window, but was below the inferior edge of the internal acoustic meatus (IAM). HJB type-2 was defined when the dome of JB was higher than the inferior edge of IAM. The frequencies and types of HJB were evaluated. JBID for each HJB type was determined. Frequencies of JBID eroding the vestibular aqueduct (VA), the cochlear aqueduct and the posterior semicircular canal were examined.
HJB type-1 and HJB type-2 were found in 19% (105/552) and in 15.8% (87/552) of studied ears. JBID showed to be in 3.8% (21/552) of all ears. 90.5% (19/21) of JBID revealed eroding of VA. Jugular bulb related cochlear aqueduct dehiscence and jugular bulb related posterior semicircular canal dehiscence were found in one ear each. The frequency of jugular bulb related vestibular aqueduct dehiscence (JBVAD) in patients with HJB reaching above IAM was higher than in patients with HJB lower than IAM.
HJB is common, but JBID is rare. JBID prevalently erodes VA. HJB rising above IAM is most at risk to show JBVAD.
高位颈静脉球（HJB）可侵蚀内耳结构，导致颈静脉球相关内耳裂（JBID）。本研究旨在利用高分辨率计算机断层扫描（HRCT）分析颈静脉球（JB）位置与JBID之间的关系。
在这项回顾性研究中，分析了276例患有听力损失、耳源性眩晕、耳鸣或特发性周围性面神经麻痹患者的552只耳的HRCT图像。当JB穹窿到达圆窗下部上方但在内耳道（IAM）下缘下方时，定义为HJB 1型。当JB穹窿高于IAM下缘时，定义为HJB 2型。评估HJB的频率和类型。确定每种HJB类型的JBID。检查JBID侵蚀前庭导水管（VA）、蜗水管和后半规管的频率。
在所研究的耳中，HJB 1型和HJB 2型分别占19%（105/552）和15.8%（87/552）。JBID在所有耳中占3.8%（21/552）。90.5%（19/21）的JBID显示VA受到侵蚀。在一只耳中分别发现了颈静脉球相关蜗水管裂和颈静脉球相关后半规管裂。HJB高于IAM的患者中颈静脉球相关前庭导水管裂（JBVAD）的频率高于HJB低于IAM的患者。
HJB常见，但JBID罕见。JBID主要侵蚀VA。高于IAM的HJB最易出现JBVAD。
