Low prevalence of fetal-type posterior cerebral artery in patients with basilar tip aneurysms

Diogo, Mariana Cardoso; Fragata, Isabel; Dias, Sara P.; Nunes, Jacqueline Targino; Pamplona, Jaime; Reis, João Paulo Carneiro dos

doi:10.1136/neurintsurg-2016-012503

Cited by 11 publications

(4 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Interestingly, a statistically significant association was found between the absence of FPCA and basilar tip aneurysms, justified by a reduced hemodynamic stress in cases with FPCA [ 24 ]. So, the FPCA could be regarded as a protective variant for formation of basilar tip aneurysms [ 24 ].…”

Section: Discussionmentioning

confidence: 99%

The Fetal Type of Posterior Cerebral Artery

et al. 2023

View full text Add to dashboard Cite

Background and Objectives: Anatomical variations of the arterial circle of Willis (cW) are common. A posterior cerebral artery (PCA) fed mostly or exclusively from the internal carotid artery is a fetal PCA (FPCA), partial (p-FPCA), or full/complete (f-FPCA), respectively. Because FPCA occurs in different anatomical configurations of the cW sides, we aimed to document in detail these morphological possibilities of FPCA within the cW. Materials and Methods: FPCAs were documented on a retrospective set of 139 computed tomography angiograms. Results: FPCAs were found in thirteen cases, nine males and four females. In 7/13 cases there were two modified sides of the cW. In 5/13 cases there were three altered sides of the cW. Another case with FPCA showed four altered sides of the cW. In 10/13 cases, FPCA was unilateral and in the other three cases it was bilateral. Compared to the overall group, unilateral p-FPCAs were found in 1.43%, while unilateral f-FPCAs were found in 5.75%. A bilateral p-FPCA-f-FPCA combination was found in 0.71% and a bilateral f-FPCA-f-FPCA combination occurred in 1.43%. An anatomically isolated ICA was found in just one case with bilateral f-FPCA (0.71%). In 7/13 FPCA cases there were arterial variants exclusively in the posterior cW. In the other 6/13 FPCA cases, there were variants in both anterior and posterior circulation. There were no statistically significant associations of FPCA with sex or age. The higher prevalence of right-sided FPCA was not statistically significant. Conclusions: Anatomical assessments of cW should be performed on a case-by-case basis, as they may correspond to different cW morphologies.

show abstract

Section: Discussionmentioning

confidence: 99%

The Fetal Type of Posterior Cerebral Artery

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Several studies have described FTP in great detail, including its incidence, the association between FTP and occipital lobe infarction, life-threatening headache and white matter degeneration ( 7 , 8 ). FTP has also been reported to be associated with the occurrence of PComA aneurysm ( 9 ).…”

Section: Introductionmentioning

confidence: 99%

Is fetal‑type posterior cerebral artery a risk factor for intracranial aneurysm as analyzed by multislice CT angiography?

Wan

2017

Exp Ther Med

View full text Add to dashboard Cite

Fetal-type posterior cerebral artery (FTP) is a common anatomic variation that is closely associated with intracranial aneurysm. In the present study, multislice computed tomography angiography (CTA) was performed to assess whether FTP is a risk factor for intracranial aneurysm. CTA data of 364 consecutive cases of patients who were suspected with cerebrovascular disease or intracranial aneurysm of intracranial artery from 2013 to 2016 were reviewed and the incidence rates of FTP, other variations of the circle of Willis, intracranial aneurysm and FTP with intracranial aneurysm were evaluated. The χ2 test was used to assess the influence of FTP and gender on the incidence rates of other variations of the circle of Willis, intracranial aneurysm and internal carotid artery-posterior communicating artery (ICA-PComA) aneurysm. Binary logistic regression analysis was performed to assess the associations of FTP and gender with intracranial aneurysm and ICA-PComA aneurysm. Compared with non-FTP patients, FTP cases exhibited significantly higher rates of other variations of the circle of Willis (χ2=80.173, P<0.001) and ICA-PComA aneurysm (χ2=4.437, P=0.035). Among patients with FTP and bilateral FTP, more female than male patients with intracranial aneurysm were identified. However, among all patients with intracranial aneurysm, no statistically significant differences in the prevalence of FTP (χ2=2.577, P=0.108) and bilateral FTP (χ2=2.199, P=0.159) between males and females were identified. Binary logistic regression analysis revealed that FTP and gender were risk factors for intracranial aneurysm and ICA-PComA aneurysm. A moderate association between FTP and ICA-PComA aneurysm (OR=2.762) were identified, although there was a weak association between FTP and intracranial aneurysm [odds ratio (OR)=1.365]. Furthermore, a strong association was identified between gender and intracranial aneurysm (OR=0.328), and a moderate association existed between gender and ICA-PComA aneurysm (OR=0.357). In conclusion, female gender is an independent risk factor for intracranial aneurysm, and FTP and female gender are independent risk factors for ICA-PComA aneurysm.

show abstract

“…13 Some studies have found that there is a significant relation among FPCA and occipital lobe infarction, life threatening headache and White matter degeneration. [14][15] Due to ever increasing role of CW morphology in cerebral hemodynamic and ischemia, it is possible that variations within CW morphologies would be an important risk factor for development of cerebrovascular disease (CVD). In many studies it has been found that healthy collateral circulation decreases the risk of temporary ischemic attack and fatal ischemic stroke.…”

Section: -10mentioning

confidence: 99%

Circulus Willis Anomalies Diagnosed with CT Angiography and Evaluation of Their Relations with Ischemic Stroke

2023

Gümüşhane Üniversitesi Sağlık Bilimleri Dergisi

View full text Add to dashboard Cite

Our aim in this study is examining the frequency of posterior communicating artery (PCoM), Anterior Cerebral Artery A1 segment (ACA AI) and Fetal type posterior cerebral artery (FPCA) anomalies and their effects on ischemic stroke by retrospectively analyzing examinations of Computerized Tomography Angiography (CTA) taken in our hospital within 2017. 22 cases (26.5%) diagnosed with bilateral hypoplastic / aplastic PCoA anomaly, were diagnosed with anterior circulation infarct, 24 cases (28.9%) were diagnosed with posterior circulation infarct, but 37 cases (44.6%) were not diagnosed with ischemic stroke. 17 (37.8%) of the cases who have unilateral hypoplastic / aplastic PCoA anomaly, were diagnosed with anterior circulation infarct, 14 cases (31.1%) were diagnosed with posterior circulation infarct. 13 (26%) of 50 cases diagnosed with unilateral hypoplastic / aplastic ACA A1 segment, were diagnosed with anterior circulation infarct, 10 cases (20%) were diagnosed with posterior circulation infarct. 27 cases (54%) were not diagnosed with ischemic stroke. Both of 2 cases diagnosed with bilateral hypoplastic / aplastic ACA A1 segment, had anterior circulation infarct. 4 (30.8%) of 13 cases diagnosed with unilateral FPCA anomaly, were diagnosed with anterior circulation infarct, 3 cases (23.1%) were diagnosed with posterior circulation infarct, 6 cases (46.2%) did not have ischemic stroke symptoms. In conclusion, even though these variations’ role in optimum stroke prophylaxis in individuals having one or more stroke risk factors, has not determined yet, there is no doubt that clinical researcher will eliminate these uncertainties in future studies.

show abstract

Low prevalence of fetal-type posterior cerebral artery in patients with basilar tip aneurysms

Cited by 11 publications

References 17 publications

The Fetal Type of Posterior Cerebral Artery

The Fetal Type of Posterior Cerebral Artery

Is fetal‑type posterior cerebral artery a risk factor for intracranial aneurysm as analyzed by multislice CT angiography?

Circulus Willis Anomalies Diagnosed with CT Angiography and Evaluation of Their Relations with Ischemic Stroke

Contact Info

Product

Resources

About