The superior hypophyseal artery (SHA) forms the largest branching artery arising from the medial wall of the paraclinoid segment of the internal carotid artery (ICA; encompassing the entire length of the ICA, distal to the proximal dural ring, and including the clinoidal and supraclinoidal segment of ICA, up to the origin of the posterior communicating artery). Paraclinoid aneurysms, arising from either the clinoidal or supraclinoidal segment of the internal carotid artery, constitute 5–14% of all intracranial aneurysms 1) 2).