title: Anatomy of saccular aneurysms.
abstract: Three facets of the anatomy of saccular aneurysms that should be considered when planning an operative approach are reviewed for each of the common aneurysm sites. Several basic anatomical principles helpful in selecting and planning the surgical approach to these aneurysms are discussed.
mesh_terms: D001488:Basilar Artery / Q000473:pathology; D001921:Brain / Q000098:blood supply; D002339:Carotid Arteries / Q000473:pathology; D002536:Cerebral Arteries / Q000473:pathology*; D006801:Humans; D002532:Intracranial Aneurysm / Q000473:pathology* / Q000601:surgery; D014711:Vertebral Artery / Q000473:pathology