Tehran University of Medical Sciences Acta Medica Iranica 0044-6025 37 4 1999 12 15 A VARIATION IN THE COURSE OF THE HUMAN VERTEBRAL ARTERY: ANATOMICAL AND CLINICAL SIGNIFICANCE 220 222 M. Akbari H. Marzban M. Toback 2015 09 28  The macroscopic study of 31 adult cadavers proved a variation to Matula and Lang's study. In 2 cases (6.4%) a prevertebral segment ran up to Cy in one of which (3.2%) the middle cervical ganglion was pierced. This, we believe, is significant not only in diagnosis but also in surgical and endovascular treatment. https://acta.tums.ac.ir/index.php/acta/article/view/2129 https://acta.tums.ac.ir/index.php/acta/article/download/2129/2120