title: Ruptured saccular aneurysm associated with duplication of the vertebral artery.
abstract: A case of a ruptured aneurysm arising from a duplicated segment of the intracranial portion of the vertebral artery is reported. This particular association, which can be explained by the embryological development of the vertebral artery, has not been described previously.
authors.affiliation: Department of Neurosurgery, Hospital de Santa Maria, Lisbon, Portugal.
authors.forename: J L
authors.initials: JL
authors.lastname: Antunes
authors.forename: A
authors.initials: A
authors.lastname: Valença
authors.forename: J M
authors.initials: JM
authors.lastname: Ferro
authors.forename: J
authors.initials: J
authors.lastname: Campos
mesh_terms: D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications* / Q000000981:diagnostic imaging; D008875:Middle Aged; D011859:Radiography; D012422:Rupture, Spontaneous; D014711:Vertebral Artery / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000196:embryology