The small frontolateral approach for the microsurgical treatment of intracranial aneurysms.

The authors describe a new approach (the Small Frontolateral Approach) for the elective microsurgical treatment of aneurysms of the rostral part of the circle of Willis, including those arising from the carotid siphon. This approach provides the advantage of permitting an easy, direct and "protective" attack to such aneurysms through a small and merely osteoplastic craniotomy.