[Association of traumatic cortical aneurysm of the middle cerebral artery and spontaneous aneurysm of the trifurcation of the same cerebral artery].

Traumatic aneurysms constitute a very small percentage of all intracranial aneurysms. A high mortality results of a catastrophic rupture and they run an unpredictable course. Traumatic aneurysms usually involve the large basal arteries or the middle meningeal arteries. We report a case of an association of a traumatic aneurysm with a congenital aneurysm located on the same middle cerebral artery. At our knowledge, it is the first described case of the literature.