Pekçevik Rıdvan, Öztürk Aylin, Pekçevik Yeliz, Toka Onur, Güçlü Aslan Gülay, Çukurova İbrahim
Department of Radiology, İzmir Katip Çelebi University, Atatürk Training and Research Hospital, İzmir, Turkey.
Department of Radiology, University of Health Sciences Turkey, Tepecik Training and Research Hospital, İzmir, Turkey.
Turk Arch Otorhinolaryngol. 2021 Dec;59(4):244-252. doi: 10.4274/tao.2021.2021-4-26. Epub 2022 Feb 22.
We aimed to investigate the mastoid emissary vein (MEV) canal incidence and to identify its relationship with jugular bulb (JB) and sigmoid sulcus anatomical variations.
We retrospectively reviewed 1,300 patients with temporal bone computed tomography (CT) scans in January 2016 to March 2020. The presence and the diameter of the MEV canal, and the anatomical variations of the sigmoid sulcus and the JB were reviewed by two radiologists. High riding JB, JB diverticulum, dehiscent JB, and anterior and lateral protrusion of the sigmoid sulcus were evaluated. All variables were summarized using descriptive statistics. The differences between the groups for categorical data were investigated using the chi-square test. Numeric variables were compared with the Mann-Whitney and the Kruskal-Wallis tests. Logistic regression models were constructed.
The study included 1,269 patients of whom 694 were female (54.7%) and 575 were male (45.3%). Their mean age was 39.01±18.47. Among them 915 (72.1%) had the right and 871 (68.6%) had the left MEV canal. Men were more likely to have the MEV canal on both sides. The presence of the right and left MEV canals was associated with the ipsilateral dominant JB/sigmoid sulcus. The left MEV canal was associated with the left high riding JB and right dehiscent JB.
This is the largest patient population reported in the literature and allows a more precise estimate of the MEV canal incidence. We also classified the diameter of the MEV canal to identify clinically relevant, prominent MEV incidence. This is also the first study to demonstrate a relationship between the presence of the MEV canal, and the JB and sigmoid canal variations. Since both the prominent MEV and the JB variations may be symptomatic, knowing this association between them may have clinical relevance.
我们旨在研究乳突导静脉（MEV）管的发生率，并确定其与颈静脉球（JB）和乙状窦沟解剖变异的关系。
我们回顾性分析了2016年1月至2020年3月期间1300例颞骨计算机断层扫描（CT）患者。两名放射科医生对MEV管的存在情况、直径以及乙状窦沟和JB的解剖变异进行了评估。评估了高位JB、JB憩室、JB裂开以及乙状窦沟的前突和侧突情况。所有变量均采用描述性统计进行总结。分类数据组间差异采用卡方检验进行研究。数值变量采用Mann-Whitney检验和Kruskal-Wallis检验进行比较。构建逻辑回归模型。
该研究纳入了1269例患者，其中694例为女性（54.7%），575例为男性（45.3%）。他们的平均年龄为39.01±18.47岁。其中915例（72.1%）右侧有MEV管，871例（68.6%）左侧有MEV管。男性双侧有MEV管的可能性更大。右侧和左侧MEV管的存在与同侧优势JB/乙状窦沟相关。左侧MEV管与左侧高位JB和右侧JB裂开相关。
这是文献报道中最大的患者群体，能够更精确地估计MEV管的发生率。我们还对MEV管的直径进行了分类，以确定临床上相关的、明显的MEV发生率。这也是第一项证明MEV管的存在与JB和乙状窦管变异之间关系的研究。由于明显的MEV和JB变异都可能有症状，了解它们之间的这种关联可能具有临床意义。
