在制作椎动脉血管标本中，发现一例椎动脉椎骨部变异，其右侧椎动脉特别粗大，直径为５．９ｍｍ；左侧椎动脉则较细，直径为２．４ｍｍ，左右椎动脉粗细如此悬殊。作者认为：有类似变异的人，当右侧椎动脉受压迫时，左侧椎动脉分布区有可能造成供血不足。椎动脉椎骨部变异一例@ In the production of vertebral artery vascular specimens, found a vertebral artery vertebral varicosis, the right vertebral artery is particularly thick, the diameter of 5.9mm; left vertebral artery is thin, diameter 2.4mm, left and right vertebral artery thickness so much . The authors believe that: there is a similar mutation, when the right vertebral artery by compression, the left vertebral artery distribution may cause insufficient blood supply. Vertebral artery vertebrae variation of a case @