An asymmetrical fenestration of the basilar artery coexisting with two aneurysms in a patient with subarachnoid haemorrhage: case report and review of the literature

Polguj, Michał; Majos, Marcin; Topol, Mirosław; Majos, Agata

doi:10.5603/fm.2014.0034

Cited by 4 publications

(1 citation statement)

References 20 publications

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“…Removal of the PCP and a part of the dorsum sellae was described, among others, as a possible surgical access to low-lying distal basilar artery aneurysms [14,47]. Such a low location of those aneurysms, as well as variations of this vessel have been described in literature [4,35]. A possible complication of removal of the PCP is CN VI palsy in Dorello's canal [47].…”

Section: Craniometric Measurementsmentioning

confidence: 99%

The abducens nerve: its topography and anatomical variations in intracranial course with clinical commentary

Wysiadecki

Orkisz

Gałązkiewicz-Stolarczyk

et al. 2015

Folia Morphol

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Section: Craniometric Measurementsmentioning

confidence: 99%

The abducens nerve: its topography and anatomical variations in intracranial course with clinical commentary

Wysiadecki

Orkisz

Gałązkiewicz-Stolarczyk

et al. 2015

Folia Morphol

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Anatomical variations of the recurrent artery of Heubner: number, origin, and course

et al. 2017

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The clinical anatomy of the recurrent artery of Heubner (RAH) was examined, focusing on its number, origin, and course, in a large number of brain specimens. We studied 724 RAH in total from 357 brain specimens (714 hemispheres). In 98.74 % of 714 cases there were one or more RAHs, while it was absent in 1.26 % of cases. There was a single RAH in 96.22 % of cases, double in 2.38 % of cases, and triple in 0.14 % of cases. In this study, three origin types of the RAH were defined. We defined A1 and A2 segment of the anterior cerebral artery (ACA) as the artery from the origin of the ACA to the junction of the anterior communicating artery (AComA) and the artery from the junction of the AComA to the anterior border of the corpus callosum, respectively. In 76.2 % of 724 arteries, the RAH originated from the junction of the A1 and A2 segment of the ACA. In 16.3 %, the RAH originated from the A2 segment of the ACA. In 7.5 %, the RAH originated from the A1 segment of the ACA. The course of the RAH was superior to the A1 segment of the ACA in 30.1 % of 724 arteries, anterior in 62.2 %, and posterior in 7.7 %. It is of great importance for neurosurgeons to understand the detailed anatomical variations of the RAH before operating to prevent operative complications resulting in neurological deficits.

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Proportion of Variant Anatomy of the Circle of Willis and Association with Vascular Anomalies on Cerebral CT Angiography

Machasio

Nyabanda

Mutala

2019

Radiology Research and Practice

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Background and Purpose. There is a wide variation in the anatomy of the CW in different individuals and population groups. The purpose of this study was to determine the proportion of variant anatomy of the circle of Willis (CW) and associated anomalies in patients with suspected cerebrovascular disease referred for cerebral computed tomography angiography (CTA) in two tertiary hospitals in Kenya. Methodology. This was a cross-sectional descriptive study conducted on 94 patients referred for cerebral CTA at the Kenyatta and Nairobi hospitals from August 2017 to February 2018. MIP and 3D reformatted images were analyzed by two senior radiologists to determine the final configuration of the CW and presence of vascular pathology. Vessels with diameters <0.8 mm were considered to be absent or hypoplastic. Chen et al. classification was used to determine the final configuration of CW. Results. Complete CW was seen in 37.2% (37.7% vs. 36.6% in males and females, respectively, p=0.909). Type A variant was the commonest anterior variant at 78.7%. Type E variant was the dominant posterior variant at 41.5%. Fetal PCA was demonstrated in 25.5%, unilateral > bilateral fetal PCA. Aneurysms were seen in 24.5% of patients. ACoA aneurysms were commonest at 43.6%. AVMs were seen in 8.5% of patients. Azygous ACA, fenestration, and duplication of vessels and persistent TA were not demonstrated. There is no significant association between aneurysms/AVMs and CW configuration. Conclusion. The findings in this study demonstrate slight differences in the CW configuration. A higher proportion of complete anterior CW was seen in female patients. Type A anterior and type E posterior circulation variants were the commonest in both males and females. No significant association was demonstrated between CW configuration and occurrence of aneurysms/AVMs in this study. Various methods of classification of CW configuration have been proposed with no standardized method to date, thus the need for consensus building between neuroanatomists, neurologists, neurosurgeons, and neuroradiologists for ease of comparison between similar future studies on the CW.

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An asymmetrical fenestration of the basilar artery coexisting with two aneurysms in a patient with subarachnoid haemorrhage: case report and review of the literature

Abstract: The vertebrobasilar system is a part of the cerebral arterial circle (circle ofWillis (Folia Morphol 2014; 73, 2: 229-233)

Cited by 4 publications

References 20 publications

The abducens nerve: its topography and anatomical variations in intracranial course with clinical commentary

The abducens nerve: its topography and anatomical variations in intracranial course with clinical commentary

Anatomical variations of the recurrent artery of Heubner: number, origin, and course

Proportion of Variant Anatomy of the Circle of Willis and Association with Vascular Anomalies on Cerebral CT Angiography

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