title: Intracranial aneurysm arising from infundibular dilation.
abstract: Infundibular dilations (IDs) are funnel-shaped enlargements in the origin of intracranial arteries. Usually, IDs occur at the junction between posterior communicating artery (PcomA) and internal carotid artery (ICA). Progression from an ID of the PcomA to aneurysms has been described, but is unclear whether an ID is a preaneurysmal state or a normal anatomical variant. The authors describe a 55-year-old female patient presenting multiple intracranial aneurysms with a small one arising from an ID at the level of posterior communicating segment of ICA. To the best of our knowledge, after a criterious search in the English literature, it is the first description of such unusual combination. The preoperative neurosurgical planning is discussed as well as the importance of intraoperative findings to the best management of this unusual situation.
authors.affiliation: Department of Medical Sciences, Division of Neurosurgery, University Nove de Julho (UNINOVE), Sao Paulo, SP, Brazil.
authors.forename: Benedito Jamilson Araujo
authors.initials: BJ
authors.lastname: Pereira
authors.forename: Vanessa Milanesi
authors.initials: VM
authors.lastname: Holanda
authors.forename: Carlos Vanderlei Medeiros
authors.initials: CV
authors.lastname: de Holanda
authors.forename: Jean Goncalves
authors.initials: JG
authors.lastname: de Oliveira
mesh_terms: D002536:Cerebral Arteries; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000175:diagnosis / Q000601:surgery; D008875:Middle Aged
references.citation: Arq Neuropsiquiatr. 2002 Jun;60(2-B):478-80
references.pmid: 12131954
references.citation: Acta Neurochir (Wien). 2008 Mar;150(3):279-84; discussion 284
references.pmid: 18193150
references.citation: Gerontologia. 1963;7:187-92
references.pmid: 13960917
references.citation: Acta radiol. 1959 Jun;51(6):415-21
references.pmid: 13670004
references.citation: J Neurosurg. 1995 Sep;83(3):421-5
references.pmid: 7666216
references.citation: Neurosurgery. 1994 Jun;34(6):1075-7; discussion 1077
references.pmid: 8084394
references.citation: J Neurosurg. 1970 Nov;33(5):529-31
references.pmid: 5479491
references.citation: J Neurosurg. 1964 Feb;21:135-8
references.pmid: 14113951
references.citation: AJNR Am J Neuroradiol. 1981 Jul-Aug;2(4):368-70
references.pmid: 6787905
references.citation: Neurol Med Chir (Tokyo). 1994 Mar;34(3):172-5
references.pmid: 7516046
references.citation: Neurosurgery. 2007 Sep;61(3 Suppl):63-72; discussion 72-3
references.pmid: 17876226
references.citation: Arch Neurol. 1963 Mar;8:272-85
references.pmid: 13983641
references.citation: Neurosurgery. 1998 Dec;43(6):1445-8; discussion 1448-9
references.pmid: 9848859
references.citation: Neuroradiology. 1986;28(1):23-9
references.pmid: 3951684
references.citation: Clin Neuroradiol. 2011 Jun;21(2):87-90
references.pmid: 21140127