[The diagnostic value of ultrasound in carotid web and the characteristics of misdiagnosed cases].

Data of 42 patients with carotid web diagnosed by ultrasound or confirmed by computed tomography angiography (CTA) or surgical pathology in the First Affiliated Hospital of Zhengzhou University were retrospectively collected, including 20 males and 22 females, aged 35-77 (55±11) years. According to the accuracy of ultrasound diagnosis of carotid web, the patients were divided into Group of misdiagnoses by ultrasonoscopy (MD group, 10 cases) and Group of correct diagnosis by ultrasonoscopy (CD group, 32 cases). Compared with CD group, carotid webs in MD group were more likely to be associated with plaque (100.00% vs 12.50%), severe local vascular stenosis (70.00% vs 0) or occlusion (30.00% vs 0) (all P<0.05), carotid intima-media thickening (80.00% vs 28.13%) and plaque formation in other parts of carotid artery (100.00% vs 37.50%) (both P<0.05). Moreover, the correct diagnosis rate of ultrasound was higher than that of CTA (76.19% vs 59.52%, P=0.039).