患者男 ,2 8岁。因咳嗽发现颈部一包块而就诊。查体 :左颈部根部触及 6 0 mm× 70 mm× 6 0 mm大小包块 ,与颈动脉搏动一致 ,有压痛。使用 AU4彩色多普勒超声诊断仪 ,探头频率7.5 MHz,常规检查颈部发现左颈总动脉距根部约 15 mm处探及一缺口宽 12 mm并向外膨出一椭圆形无回声区 Male patient, 2 8 years old. See a piece of the cough because of the neck and treatment. Physical examination: the root of the left neck touched 6 0 mm × 70 mm × 600 mm mass, consistent with the carotid artery pulsation, tenderness. Using AU4 color Doppler ultrasound diagnostic apparatus, the probe frequency of 7.5 MHz, routine examination of the neck found that the left common carotid artery from the root of about 15 mm at a notch and a width of 12 mm and outward bulging an oval anechoic zone