A 46-year-old woman with a coiled ruptured basilar tip aneurysm and an additional large fusiform middle cerebral artery aneurysm. A 46-year-old woman with a coiled ruptured basilar tip aneurysm and an additional large fusiform middle cerebral artery aneurysm. A, Fusiform middle cerebral artery aneurysm on the M1-M2 transition. B, Angiogram after construction of an intracranial high-flow bypass from the supraclinoid internal carotid artery to the M2. The aneurysm has completely thrombosed. W.J. van Rooij, and M. Sluzewski AJNR Am J Neuroradiol 2009;30:12-18 ©2009 by American Society of Neuroradiology