论文部分内容阅读
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。
This article reports two cases of aortic arch branch variation. According to William’s classification, the first case belongs to G type, the second case belongs to H type. H-type in the country have not seen the report. In addition, in the first case (type G), the right vertebral artery was also found to originate from the right common carotid artery and into the fourth cervical transverse foramen. This variation has not been reported among the people. In addition to the above variations, there was a variation of thoracic duct in both cases. This variant of the thoracic duct appears to be associated with variations in the right subclavian artery. The two older men reported had significant dilatation at the beginning of the variant right subclavian artery. The reason for this enlargement may be a passive extension of the blood flow of the variant right subclavian artery resulting from prolonged obstruction.