CT characteristics of dehiscent sigmoid plates presenting as pulsatile tinnitus: a study of 23 patients
CT characteristics of dehiscent sigmoid plates presenting as pulsatile tinnitus: a study of 23 patients
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表现为搏动性耳鸣的乙状结肠板裂开的 CT 特征：23 例患者的研究
DOI：
10.1177/0284185114559762
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发表时间：
2015-11-01
期刊：
影响因子：
1.3
通讯作者：
Fan, Zhanming
中科院分区：
文献类型：
--
作者：
Geng, Wei;Liu, Zhaohui;Fan, Zhanming
背景：虽然有报道称乙状结肠板开裂可引起搏动性耳鸣，但详细的影像学表现尚未得到评价。目的回顾性评价乙状结肠钢板开裂合并PT的CT表现。材料与方法对23例PT患者的CT表现进行分析，评价乙状结肠钢板开裂、侧窦和颞骨充气的特征。结果在PT侧共发现31处缺损。25个缺损累及上弯或下行段，4个累及以上两个部位，只有2个累及下弯。26例缺损累及前缘或前外侧缘，仅有5例累及乙状窦外侧缘。18例单侧优势侧窦患者乙状结肠板均位于优势侧，2例位于右侧，3例位于共优势侧窦患者左侧。14例颞骨充气过度，9例颞骨充气良好。17例术后PT消退的患者中有15例存在单一缺陷。6例术后持续存在PT的患者中有4例存在不止一个缺陷。结论乙状骨板裂常累及上弯前缘或前外侧缘或优势侧乙状骨窦降段，常伴颞骨广泛气化。
Background Although some features of dehiscent sigmoid plates as a cause of pulsatile tinnitus (PT) have been reported, detailed imaging findings have not been evaluated. Purpose To retrospectively evaluate the computed tomography (CT) features of dehiscent sigmoid plates associated with PT. Material and Methods The CT images of 23 PT patients were assessed to evaluate the features of the dehiscent sigmoid plates, lateral sinuses, and temporal bone pneumatization. Results A total of 31 defects were found on the PT side. Twenty-five defects involved the superior curve or the descending segment, four involved above both sites, and only two involved the inferior curve. Twenty-six defects involved the anterior border or the anterolateral border, and only five involved the lateral border of the sigmoid sinus. The dehiscent sigmoid plate was on the dominant side in all 18 patients with a unilateral dominant lateral sinus, and on the right side in two patients and on the left side in three patients with co-dominant lateral sinuses. Fourteen patients had hyperpneumatization and nine had good pneumatization of temporal bone. Fifteen of the 17 patients with resolution of PT after surgery had a single defect. Four of the six patients with persistence of PT after surgery had more than one defect. Conclusion Sigmoid plate dehiscence often involves the anterior or anterolateral border of the superior curve or the descending segment of the sigmoid sinus on the side of the dominant lateral sinus, which often coexists with extensive pneumatization of the temporal bone.