In one case, CTA showed marked ectatic vertebrobasilar arteries, which deviated to the right cerebellopontine angle with compression of the right fifth nerve.

• 第一位病患之电脑断层血管摄发现椎基底动脉明显扩张、弯曲至右侧小脑髓脑角并造成右侧第五对脑神经之压迫。