False Aneurysms of the Middle Meningeal Artery

I N CONTRAST tO the relative f requency of aneurysms of the cerebral ar tery, meningeal vessels rarely are so involved. Deve lopmenta l aneurysmal malformat ions of meningeal vessels have been reported by several authors. 1,13 Lacerat ions of meningeal arteries usual ly unleash violent, lethal hemorrhage, so tha t development of an aneurysmal sac is unlikely. This paper concerns the development , subsequent to head injury, of middle meningeal aneurysms. These curious lesions are associa ted with a typical history, present a comparable clinical course and have an easily recognizable angiographic appearance. Unt reated, they usually give rise to fatal hemorrhage. I f diagnosed prompt ly , operat ive results are uni formly excellent.