基底动脉的持续性未融合节段：纵向与轴向未融合
Persistent nonfused segments of the basilar artery: longitudinal versus axial nonfusion.
作者信息
Hoh Brian L, Rabinov James D, Pryor Johnny C, Hirsch Joshua A, Dooling Elizabeth C, Ogilvy Christopher S
机构信息
Endovascular Neurosurgery and Interventional Neuroradiology Service, Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
出版信息
AJNR Am J Neuroradiol. 2004 Aug;25(7):1194-6.
Embryologic development of the basilar artery occurs along two axis systems: longitudinal fusion and axial fusion. Longitudinal fusion consists of midline fusion of paired ventral arteries and reflects the simplified pattern of arterial anatomy found in the spinal cord. Axial fusion consists of fusion of the distal basilar artery, which arises from the caudal division of the internal carotid artery, to the midbasilar agenesis to the posterior inferior cerebellar artery termination of the vertebral arteries. Persistent longitudinal nonfusion (or complete duplication) of the basilar artery is very rare, and persistent axial nonfusion is even rarer. We report one case of persistent longitudinal nonfusion of the basilar artery in a 3-year-old boy and a case of persistent axial nonfusion of the basilar artery in a 43-year-old man.
基底动脉的胚胎发育沿着两个轴系统发生
纵向融合和轴向融合。纵向融合包括成对腹侧动脉的中线融合，反映了脊髓中动脉解剖结构的简化模式。轴向融合包括起源于颈内动脉尾部分支的远端基底动脉与基底动脉中段发育不全至椎动脉小脑后下动脉末端的融合。基底动脉持续纵向未融合（或完全重复）非常罕见，而持续轴向未融合则更为罕见。我们报告了1例3岁男孩基底动脉持续纵向未融合的病例和1例43岁男性基底动脉持续轴向未融合的病例。
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