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目的探讨颈动脉体瘤影像学表现及诊断价值。方法33例颈动脉体瘤均经手术病理证实,均行X线平片及超声检查,其中28例经血管造影、20例行CT、16例行MRI和10例行MRA检查。回顾性分析颈动脉体瘤的各种影像学表现,评价其临床价值。结果各种检查均可显示肿瘤部位及其形态,颈动脉体瘤的B型超声特点为中等偏低实质回声,>3 cm的肿瘤可见管道结构,但肿瘤上缘观察欠清,2例行彩色多普勒超声显示瘤内网状血管。CT增强显示为富血管肿瘤,其中1例肿瘤均匀强化,颈内、外动脉密度与瘤体等同难以分辨。MRI的特点为瘤内见流空的血管影像,明确显示颈内、外动脉分离。MRA能良好显示肿瘤与颈总动脉及其分叉的关系。血管造影可明确显示供血动脉。结论B超、CT和MRI对颈动脉体瘤的诊断各具一定的特征性。
Objective To investigate the imaging manifestations and diagnostic value of carotid body tumor. Methods 33 cases of carotid body tumor were confirmed by surgery and pathology. All cases were examined by X-ray and ultrasonography. Among them, 28 cases underwent angiography, 20 cases underwent CT, 16 cases underwent MRI and 10 cases underwent MRA. A retrospective analysis of carotid body tumor imaging performance, evaluate its clinical value. Results All kinds of examinations showed the location of the tumor and its morphology. The characteristics of B-mode ultrasound in carotid body tumors were moderate low-grade echogenicity. The ductal structures were visible in> 3 cm tumors. However, Doppler ultrasound showed intratumoral vascular. CT showed enhanced vascular tumors, including 1 case of uniform tumor enhancement, internal carotid artery and tumor density is difficult to distinguish the same. MRI is characterized by aneurysm see the vascular image of the tumor, clearly shows the separation of the internal and external arteries. MRA can well show the relationship between the tumor and the common carotid artery and its bifurcation. Angiography clearly shows the feeding artery. Conclusion B-ultrasound, CT and MRI have certain characteristics for the diagnosis of carotid body tumor.