Anatomic Variation of Vertebrobasilar System and Its Branches: Case Report

İngilizce (OpenAlex)

To describe aberrant dominant and hypoplastic vertebral (VA) arteries and duplicated posterior inferior cerebellar artery (PICA) and anterior inferior cerebellar artery (AICA).Artery sections of 5 µm were obtained for morphological and microscopic examinations.Sections were stained with Masson's trichrome and histological examination was performed under the light microscope.During routine dissection in the department of Anatomy, the presence of a very thin hypoplastic right VA, the left dominant VA was continuous with the basilar artery, and both duplicate of left PICA and left AICA were observed.We examined the histological sections of the dominant and hypoplastic VA.The external diameters of the left VA were over 2 times more than the right one.Understanding the variation of the arterial vertebrobasilar system may influence the surgical procedures and better appreciate the arterial flow of the right and the left-brain in clinical care.This is the first report concerning the dominant and hypoplastic VA and duplicate PICA and AICA at the same time in one cadaver.