Moneir Waleed, Darwish Ahmed Yasser, Khafagy Yasser Wafeek, Youssef Mahmoud Attia, El Rakhawy Mohammed Magdy, Hemdan Ahmed
Mansoura Faculty of Medicine, Mansoura, Egypt.
Department of Diagnostic Radiology, Faculty of Medicine, Mansoura University, Mansoura, Egypt.
Indian J Otolaryngol Head Neck Surg. 2024 Feb;76(1):865-870. doi: 10.1007/s12070-023-04299-8. Epub 2023 Oct 31.
to assess radiologically the prevalence of SSCD with its clinical presentations and its relationship with age.
a prospective cohort study carried out on 200 consecutive patients (400 temporal bones). Radiological evaluation was performed using High Resolution Computed Tomography (HRCT) with measurement of thickness of bone covering superior semicircular canal (SCC), height and diameter of SSC.
Two hundred patients (400 temporal bones) were involved. The mean thickness ± SD, the mean diameter ± SD and the mean height ± SD were 1.38 ± 0.80 mm, 0.94 ± 0.26 mm and 10.91 ± 2.39 mm respectively. The prevalence of SSCD and predehiscence were 1% and 14% respectively. The commonest symptom encountered was autophony (48.3%). When the SSC thickness, diameter and height were compared with the age of patients, statistically significant differences were detected. The highest diameter, lowest height and lowest thickness were found in patients aged from 54 to 72 years. Thickness of bony layer covering SSC was found to be the most validated measurement for differentiation between cases with positive and negative symptoms with the highest sensitivity and specificity.
The prevalence of SSCD and predehiscence varied among the studies. Autophony is the commonest symptom usually encountered. The condition is acquired rather than congenital. The thickness of bone covering SCC is the most validated measurement in differentiation between cases with positive and negative symptoms.
通过影像学评估上半规管裂（SSCD）的患病率、临床表现及其与年龄的关系。
对200例连续患者（400侧颞骨）进行前瞻性队列研究。采用高分辨率计算机断层扫描（HRCT）进行影像学评估，测量覆盖上半规管（SCC）的骨厚度、SCC的高度和直径。
纳入200例患者（400侧颞骨）。平均厚度±标准差、平均直径±标准差和平均高度±标准差分别为1.38±0.80mm、0.94±0.26mm和10.91±2.39mm。SSCD和半规管前裂的患病率分别为1%和14%。最常见的症状是耳内自听增强（48.3%）。当将SCC的厚度、直径和高度与患者年龄进行比较时，发现有统计学显著差异。在54至72岁的患者中发现直径最大、高度最低和厚度最低。发现覆盖SCC的骨层厚度是区分有症状和无症状病例的最有效测量指标，具有最高的敏感性和特异性。
不同研究中SSCD和半规管前裂的患病率有所不同。耳内自听增强是最常遇到的症状。这种情况是后天获得而非先天性的。覆盖SCC的骨厚度是区分有症状和无症状病例的最有效测量指标。
