The tissue of the brain is supplied by a network of cerebral arteries. If the wall of a cerebral artery becomes weakened, a portion of the wall may balloon out forming an aneurysm. A cerebral aneurysm may enlarge until it bursts, sending blood throughout the spaces in or surrounding the brain.
Luc Dupont Jasmin, MD, PhD, FRCS (C), FACS, Department Neurosurgery at Cedars-Sinai Medical Center, Los Angeles, CA. Department of Surgery Ashland Community Hospital, Ashland, OR. Department of Anatomy at UCSF, San Francisco, CA. Review provided by VeriMed HealthCare Network.