title: Bihemispheric posterior inferior cerebellar artery occurring with an azygos anterior cerebral artery: case study.
abstract: Variations in intracranial vasculature are well known. We report a rare anatomic variation in a patient who underwent cerebral angiography for suspected intracranial aneurysm. Digital subtraction angiography revealed a bihemispheric posterior inferior cerebellar artery (PICA) and an azygous anterior cerebral artery (ACA). There was no evidence of any aneurysm or vascular abnormality. To our knowledge, this is the first reported case of a patient with a common PICA supplying both the cerebellar hemispheres and a common ACA supplying ACA territory bilaterally. It is important for the physician to be aware of these anatomical variations in order to differentiate a normal variant from a pathological condition.
authors: Department of Neurosurgery, Louisiana State University Health Sciences Center Shreveport, 1501 Kings Highway, Shreveport, LA 71130-3932, USA.
authors: Jamie
authors: 0000-0001-7459-6693
authors: J
authors: Toms
authors: Department of Neurosurgery, University of California, 400 Parnassus Avenue, San Francisco, CA 94122, USA.
authors: Rishi
authors: R
authors: Wadhwa
authors: Department of Neurosurgery, Louisiana State University Health Sciences Center Shreveport, 1501 Kings Highway, Shreveport, LA 71130-3932, USA.
authors: Sudheer
authors: 0000-0001-5145-7172
authors: S
authors: Ambekar
authors: Department of Neurosurgery, Louisiana State University Health Sciences Center Shreveport, 1501 Kings Highway, Shreveport, LA 71130-3932, USA.
authors: Hugo
authors: 0000-0002-8348-4535
authors: H
authors: Cuellar