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目的探讨颈内动脉先天发育异常的CT表现。方法搜集经影像学诊断的3例颈内动脉发育异常患者的临床及影像资料,结合文献分析其CT特点。结果 3例颈内动脉发育异常均位于左侧,2例为颈内动脉发育不全,表现为颈内动脉相应节段的缺如,1例合并颈动脉管未发育,另1例颈动脉管正常;1例为颈内动脉发育不良,显示颈内动脉及颈动脉管纤细。1例合并颅内多发动脉瘤。3例均显示相应侧支血管。结论颈内动脉先天发育异常可合并多种颅外内血管异常,诊断需要结合颈内动脉及颈动脉管的形态。
Objective To explore CT manifestations of congenital dysplasia of internal carotid artery. Methods The clinical and imaging data of 3 patients with abnormal internal carotid artery imaging diagnosed by imaging were collected and their CT features were analyzed based on the literature. Results Three cases of internal carotid artery dysplasia were located on the left side, two cases were internal carotid artery hypoplasia, which showed the absence of corresponding segment of internal carotid artery. One case had no carotid artery development and the other had normal carotid artery ; 1 case of poor development of the internal carotid artery, carotid artery and carotid stenosis. 1 case complicated with intracranial multiple aneurysms. 3 cases showed the corresponding collateral vessels. Conclusions Congenital abnormalities of the internal carotid artery may combine with various extracranial vascular abnormalities. The diagnosis needs to combine the morphology of the internal carotid artery and the carotid artery.