Atypical origin of arteria carotis communis sinistra.

Abstract

The most frequent variation of the origin of a. carotis communis sinistra is its common trunk with truncus brachiocephalicus, or as a branch arising from the truncus. The aim of this study was to present the variation of the origin of a. carotis communis sinistra from the aortic arch. The examination was made on 110 unselected human hearts without pathoanatomical changes, obtained after autopsy of newborns, fixed in 10% formaldehyde, at the Institute of Anatomy, Medical Faculty, Skopje. The hearts were taken with the aortic arch, proximal part of thoracic aorta and lig. arteriosum. Standard anatomical methods, inspection and dissection, were used for analyzing the origin of a. carotis communis sinistra from the aortic arch. The awareness of vascular variations is imperative in diagnostic procedures and in planning surgical interventions during clinical practice.