We report a case of extracranial fenestration detected by cerebral angiography, and analyze the embryologic pathogenesis and clinical significance of this variation.

• 本文报道1例经确诊为颅外型椎动脉窗式变异患者的全脑血管造影情况,并从胚胎学成因及临床意义方面进行分析和讨论。