Fenestration of the supraclinoid internal carotid artery arising from the paraclinoid aneurysmal dilatation and fusing with the origin of the posterior communicating artery: a case report.
We report an extremely rare case of fenestration of the supraclinoid internal carotid artery (ICA) diagnosed by magnetic resonance (MR) angiography. The smaller channel arose from the paraclinoid ICA aneurysmal dilatation, and the posterior communicating artery arose from the distal end of the fenestration. Careful observation of MR angiographic images, including source images, is important to detect rare arterial variations, and their identification on MR angiography is aided by the creation of partial maximum-intensity-projection images and partial volume-rendering images.
Department of Diagnostic Radiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan. auchino@saitama-med.ac.jp.
Akira
A
Uchino
Social Medical Corporation KAN-ETSU, KAN-ETSU Hospital, Tsurugashima, Japan.
Masahiko
M
Tanaka
D000368:Aged; D002340:Carotid Artery Diseases / Q000000981:diagnostic imaging*; D002343:Carotid Artery, Internal / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging*; D018810:Magnetic Resonance Angiography
Cerebral aneurysm; Fenestration; Internal carotid artery; Magnetic resonance angiography; Posterior communicating artery
J Neuroradiol. 2012 Jul;39(3):195-9
22189288
AJNR Am J Neuroradiol. 1984 Sep-Oct;5(5):634-6
6435433
AJNR Am J Neuroradiol. 2004 Mar;25(3):421-4
15037466
Surg Radiol Anat. 2010 Feb;32(2):165-9
19756351
Clin Neuroradiol. 2013 Jun;23 (2):133-6
22231576
Surg Radiol Anat. 2008 Jul;30(5):397-401
18350245
Surg Radiol Anat. 2012 Jul;34(5):401-4
22271164
Eur Radiol. 2006 Jul;16(7):1623-4
16408202
Neurosurgery. 2011 Oct;69(4):E1005-8; discussion E1009
21572363
AJNR Am J Neuroradiol. 1993 May-Jun;14 (3):675-80
8517358
Surg Radiol Anat. 2016 Nov;38(9):1095-1098
26885865
Surg Radiol Anat. 2007 Jun;29(4):317-21
17429569
World Neurosurg. 2011 Dec;76(6):592.e1-5
22251509
Surg Neurol. 2007;68 Suppl 1:S60-3; discussion S63
17963929
Neuroradiology. 2012 May;54(5):445-50
21732084