头臂干位置变异１例钱亦华在一成年女性标本上，见其头臂干经行变异，这种变异少见，现报道如下：头臂干平胸骨颈静脉切迹高度发自主动脉弓，在颈部先后左上行，继向右上行，将气管压向右侧使之向右移位，食管被挤向左侧。头臂干于气管左侧分为右颈总动脉和右锁骨下动脉，... Variation of the brachiocephalic trunk position of a case of Qian Yihua in an adult female specimens, see its brachiocephalic trunk variation, this variation is rare, are reported as follows: brachiocephalic thoracic jugular vein notch height of the aortic arch, in The neck has a left upper left, then right upward, the trachea is pressed to the right to shift to the right, the esophagus is squeezed to the left. Brachial stem in the left side of the trachea is divided into right common carotid artery and right subclavian artery, ...