title: A distal anterior cerebral artery aneurysm in infant: disappearance and reappearance of the aneurysm.
abstract: The incidence of intracranial aneurysms in childhood is rare, especially in infancy. Spontaneous thrombosis of a cerebral aneurysm in a child is very rare, particularly in a non-giant aneurysm. We report a case of a 1-month-old girl with a distal anterior cerebral artery aneurysm which disappeared spontaneously after subarachnoid hemorrhage and reappeared 6 months later. Surgical resection of the aneurysm was performed and she discharged uneventfully 10 days later. Histological examination revealed an aneurysm with a fibrous muscular layer, absence of the internal elastic lamina and partial hypertrophy of the intimal layer. Though the pathogenesis of this aneurysm is uncertain, two hypotheses are discussed.
authors.affiliation: Department of Neurosurgery, Sendai City Hospital, Sendai, Japan. osamu-m@yb3.so-net.ne.jp
authors.forename: Osamu
authors.initials: O
authors.lastname: Motohashi
authors.forename: Motonobu
authors.initials: M
authors.lastname: Kameyama
authors.forename: Shigeki
authors.initials: S
authors.lastname: Imaizumi
authors.forename: Masaki
authors.initials: M
authors.lastname: Mino
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Naganuma
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Ishii
authors.forename: Takehide
authors.initials: T
authors.lastname: Onuma
mesh_terms: D002536:Cerebral Arteries / Q000293:injuries*; D018450:Disease Progression; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D002532:Intracranial Aneurysm / Q000150:complications* / Q000473:pathology*; D018810:Magnetic Resonance Angiography / Q000379:methods; D013345:Subarachnoid Hemorrhage / Q000209:etiology*