头颈部动、静脉解剖变异较多见。不同教科书及文献中均有记载,而本例所见的颈内静脉缺如合并甲状腺上动脉解剖变异极少见,现报告如下。患者男,37岁。汉族。因舌白斑癌变于1991年4月26日在全麻下行舌右侧部分切除加右侧颈淋巴清扫术。术中于锁骨上1.5cm处切开颈血管鞘,仅见到粗大的颈总动脉跳动及其外侧的迷走神经,未见颈内静脉。为寻找颈内 Head and neck movements, venous anatomical variations more common. Different textbooks and literature are documented, and in this case seen in the absence of anatomical variation of the internal jugular vein with rare, known as the following. Male patient, 37 years old. Han nationality. Tongue leukoplakia due to change in April 26, 1991 under general anesthesia tongue right partial resection plus the right neck dissection. Surgery in the clavicle at about 1.5cm incision neck sheath, only to see the large common carotid artery beating and its lateral vagus nerve, no internal jugular vein. Looking for the neck