Fusiform Aneurysm Associated With Fenestration of the Posterior Communicating Artery  -Case Report-

Baba, Shirō; Fukuda, Yuutaka; Mizota, Shingo; Hayashi, Kentarō; Suyama, Kazuhiko; Nagata, Izumi

doi:10.2176/nmc.50.568

Cited by 10 publications

(6 citation statements)

References 10 publications

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“…However, no consensus exists as to whether such aneurysms are more prone to rupture than are ones not associated with a fenestration. PCoA fenestrations are rare among the fenestrations of the anterior circulation, and of the three cases documented in the literature, two were associated with an unruptured aneurysm [6,12,13]. In the case described herein, it was the PCoA aneurysm associated with the PCoA fenestration which ruptured.…”

Section: Discussionmentioning

confidence: 78%

“…Fenestrations of the intracranial vasculature are rare congenital findings presumably resulting from the anomalous fusion or division of primitive embryonic vessels [12]. The ICA is the least common cerebral vessel to form fenestrations.…”

Section: Discussionmentioning

confidence: 99%

“…Fenestrations of the posterior communicating artery (PCoA) are uncommon and have only been documented three other times in the literature (Table 1) [12][13][14]. To our knowledge, this is the first reported case of a ruptured aneurysm associated with a PCoA fenestration.…”

Section: Introductionmentioning

confidence: 99%

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Aneurysmal subarachnoid hemorrhage with concomitant posterior communicating artery fenestration

Weiner

Grandhi

Zwagerman

et al. 2014

International Journal of Neuroscience

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Fenestrations of the posterior communicating artery (PCoA) are extremely rare. Associated aneurysms have only been documented three times in the literature, and none associated with a subarachnoid hemorrhage. We describe a 52-year-old female who presented with a subarachnoid hemorrhage secondary to a ruptured saccular aneurysm at the proximal limb of a fenestrated right PCoA. The patient was also found to have bilateral middle cerebral artery (MCA) aneurysms. Surgical management included surmising the etiology of the subarachnoid hemorrhage with subsequent clipping of both the right PCoA and MCA aneurysm. The potential embryological mechanisms leading to a PCoA fenestration are discussed.

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Section: Discussionmentioning

confidence: 78%

Section: Discussionmentioning

confidence: 99%

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Aneurysmal subarachnoid hemorrhage with concomitant posterior communicating artery fenestration

Weiner

Grandhi

Zwagerman

et al. 2014

International Journal of Neuroscience

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“…Fenestration of the intracranial artery is a congenital anatomical variant defined as segmental duplication of the intracranial artery. 1 , 2) It may occur as a result of an anomalous fusion or division of primitive embryologic vessels or plexiform network. 2 – 4) The anterior communicating artery (Acom) is the most common site followed by the basilar and vertebral arteries.…”

Section: Introductionmentioning

confidence: 99%

“…To date, only 24 cases have been reported. 1 , 3 , 5 , 8 – 26) Associated aneurysm may develop at the fenestration, especially on the proximal side, presumably due to vessel wall weakness, 27) arterial wall defects, or unusual hemodynamic stresses. 28) However, there is no further information, and the natural history of this entity and the risk for rupture remain unclear.…”

Section: Introductionmentioning

confidence: 99%

Supraclinoid Internal Carotid Artery Fenestration with Associated Aneurysm: Case Report and Literature Review

Haryu

Sato

Matsumoto

et al. 2020

NMC Case Report Journal

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Fenestration of the supraclinoid internal carotid artery (ICA) is extremely rare and may occasionally be associated with saccular aneurysms; nevertheless, the natural history remains unclear. The authors reviewed the cases of fenestration of the supraclinoid ICA and evaluated the clinical characteristics and angioarchitecture with particular focus on the incidence for aneurysm development and rupture. Previously reported 24 cases and 1 new case from our institute were examined for the presence of aneurysms (including size and presence of bleb) leading to subsequent subarachnoid hemorrhage (SAH). Furthermore, 16 cases with sufficient information were classified into one of the three types according to the developmental condition of fenestration and fusion site: Type A (developed fenestration in which the ICA appears to duplicate [two cases]); Type B (hypoplastic fenestration fused to the ICA at the origin of the posterior communicating artery [Pcom] [six cases]); and Type C (hypoplastic fenestration fused to the Pcom itself or appeared to be a duplicated Pcom [eight cases]). In type A, the two cases had an aneurysm (100%), one of which caused SAH (50%). In type B, all six cases had an aneurysm (100%), and one of five led to SAH (20%) (one case lacked information regarding SAH). In type C, five of the eight cases had an aneurysm (62.5%), with no SAH (0%). The result suggested that the extent of development of fenestration and the location of fusion are related to the incidence of aneurysms and risk for rupture.

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Duplicate origin of the posterior communicating artery diagnosed by magnetic resonance angiography

2013

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Extremely rarely, a posterior communicating artery (PCoA) of "duplicate origin" occurs when two branches of the PCoA arise separately from the supraclinoid segment of the internal carotid artery (ICA) and quickly fuse to form an arterial ring. Three such cases previously reported were described as "fenestration." We report the case of this rare variation diagnosed by magnetic resonance angiography and discuss the differentiation of PCoA of duplicate origin from PCoA fenestration, supraclinoid ICA fenestration, and hyperplastic anterior choroidal artery.

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Fusiform Aneurysm Associated With Fenestration of the Posterior Communicating Artery -Case Report-

Cited by 10 publications

References 10 publications

Aneurysmal subarachnoid hemorrhage with concomitant posterior communicating artery fenestration

Aneurysmal subarachnoid hemorrhage with concomitant posterior communicating artery fenestration

Supraclinoid Internal Carotid Artery Fenestration with Associated Aneurysm: Case Report and Literature Review

Duplicate origin of the posterior communicating artery diagnosed by magnetic resonance angiography

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