<prompt> All are common sites of a berry aneurysm, EXCEPT-Posterior cerebral aeryVeebral aeryAnterior cerebral aeryMiddle cerebral aery  <response>: Location of Berry aneurysms Berry aneurysms commonly arise at the bifurcation of major aeries. Approximately 85 of intracranial aneurysms arise on the anterior circulation, mostly on the circle of Willis. Three most common locations are: the terminal internal carotid aery middle cerebral aery bifurcation top of the basilar aery Ref : Harrison, 17e p1726 