Abstract：
UNASSIGNED: The etiology of distal common bile duct (CBD) dilatation is complex. Linear-array endoscopic ultrasonography (EUS) can not only visualize the distal and surrounding structures of the bile duct closely but also obtain pathological specimens by fine-needle aspiration, which provides an important basis for the diagnosis and differential diagnosis. The purpose of this study was to evaluate the diagnostic value of linear-array EUS in the etiology of distal CBD dilatation. Patients with distal CBD dilatation underwent linear-array EUS in the endoscopic center of The Second Affiliated Hospital of Soochow University and Traditional Chinese Medicine Hospital of Kunshan were collected from January 2015 to June 2019. The pathology results after surgery, endoscopic pathology, computed tomography (CT), and magnetic resonance imaging (MRI) results were retrospectively analyzed. The diagnostic accuracy of linear-array EUS and CT or MRI was compared. For the diagnosis of choledocholithiasis, the diagnostic accuracy of linear-array EUS was 97.5%, which was significantly higher than that of MRI (86.36%) and CT (89.74) (P < 0.001 and 0.006, respectively). The diagnostic accuracy of linear-array EUS for periampullary tumors was 93.75%, which was higher than MRI and CT with an accuracy of 82.73% and 80.34% (P = 0.004 and 0.001, respectively). Linear EUS was effective for the etiological diagnosis of distal CBD dilatation.
摘要：
■远端胆总管（CBD）扩张的病因很复杂。线性阵列超声内镜（EUS）不仅可以近距离观察胆管远端和周围结构，还可以通过细针穿刺获取病理标本，为诊断和鉴别诊断提供了重要依据。这项研究的目的是评估线性阵列EUS在远端CBD扩张的病因中的诊断价值。收集2015年1月至2019年6月在苏州大学附属第二医院内镜中心和昆山中医医院行线性阵列超声检查的远端CBD扩张患者。手术后的病理结果，内镜病理学,计算机断层扫描（CT），并对磁共振成像(MRI)结果进行回顾性分析。比较了线性阵列EUS和CT或MRI的诊断准确性。对于胆总管结石的诊断，线性阵列EUS的诊断准确率为97.5%，显著高于MRI(86.36%)和CT(89.74)(P<0.001和0.006)。线性阵列EUS对壶腹周围肿瘤的诊断准确率为93.75%，高于MRI和CT，准确率分别为82.73％和80.34％（P=0.004和0.001）。线性EUS对CBD远端扩张的病因诊断有效。
