De Caro R, Parenti A, Munari P F
Institute of Human Anatomy, University of Padova, Italy.
Acta Neurochir (Wien). 1991;108(1-2):85-7. doi: 10.1007/BF01407673.
A fenestration of the vertebrobasilar junction was found in an 80-year-old man during autopsy. It was associated with thrombosis of the vertebral arteries which had caused a left Wallenberg syndrome. The left limb of the fenestration presenting the same transverse diameter as that of the remaining part of the basilar artery appeared to be its direct (true) origin. The right limb had a lesser transverse diameter and appeared to bridge the lateral surface of the rostral end of the right vertebral artery and the basilar trunk. According to the authors, this fenestration could have been caused by the persistence of the cranial part of a primitive lateral vertebrobasilar anastomosis, rather then by the usual incomplete fusion of the primitive paired basilar arteries.
在尸检过程中，一名80岁男性被发现存在椎基底动脉交界处开窗畸形。它与椎动脉血栓形成相关，后者导致了左侧延髓背外侧综合征。开窗畸形的左侧分支与基底动脉其余部分具有相同的横径，似乎是基底动脉的直接（真正）起源。右侧分支的横径较小，似乎连接了右侧椎动脉头端的外侧表面和基底干。据作者称，这种开窗畸形可能是由于原始外侧椎基底吻合的颅部持续存在所致，而非通常情况下原始成对基底动脉的不完全融合。
