两例主动脉弓的分支变异(均伴有胸导管的异常)

TWO CASES OF ANOMALY OF THE BRANCHES OF THE AORTIC ARCH(BOTH ACCOMPANIED WITH ANOMALY OF THE THORACIC DUCT)

本文报告了两例主动脉弓的分支变异。按照William的分类,第一例属于G型,第二例属于H型。H型在国内尚未见到报告。此外,在第一例中(G型)还发现右椎动脉发自右颈总动脉,并进入第四颈椎横突孔。这种变异在国人中也未曾报告。除上述变异外,在这两例中均伴有胸导管的变异。这种件随的胸导管变异似乎是与右锁骨下动脉的变异相关联的。所报告的两例高龄男子,在变异的右锁骨下动脉的起始段均有明显的膨大。这种膨大的原因可能是由于变异的右锁骨下动脉的血流长期受阻而产生的一种被动陛的扩张。

Two cases of anomaly of the branches of aortic arch are here reported.According to William’s classification,the first case belongs to type G,and the second case to type H which has not yet been reported in Chinese literature.In the first case,however,there is also an anomaly of the right vertebral artery.It springs from the right common carotid artery and enters through the foramen of the transverse process of the upper four vertebrates.Such a case has not yet been reported on Chinese people.In addition to the above mentioned anomalies,anomaly of the thoracic duct also occurs in both cases.This anomaly seems to be related with the anomaly of the right subclavian artery.In both cases of the senile males reported here,there is a noticeable dilatation at the beginning part of the anomalistic right subclavian artery.The cause of such dilatation is probably due to the long time resistance to the blood flow of the anomalistic sub-clavain artery.