De Novo Basilar Head Aneurysms  -Two Case Reports-

Kawahara, Ichiro; Nakamoto, Morito; Matsuo, Yoshitaka; Tokunaga, Yoshiharu

doi:10.2176/nmc.50.54

Cited by 5 publications

(6 citation statements)

References 14 publications

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“…12 Multiple case reports and small series have been documented since. 2,6,9,10,14,17,18,[20][21][22][23][25][26][27]29,[31][32][33] The findings support the concept that the process of aneurysm formation is multifactorial and related to congenital, environmental, and hemodynamic factors. 4,5,8,35 There are consistently reported risk factors for the development of de novo aneurysms.…”

Section: Discussionsupporting

confidence: 58%

Risk of hemorrhage from de novo cerebral aneurysms

Kemp

Fulkerson

Payner

et al. 2013

JNS

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While rare, de novo aneurysms may have a risk for SAH that is comparatively higher than the risk associated with similarly sized, small, initially discovered unruptured saccular aneurysms. The authors therefore recommend long-term follow-up for all patients with aneurysms, and they consider a more aggressive treatment strategy for de novo aneurysms than for incidentally discovered initial aneurysms.

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Section: Discussionsupporting

confidence: 58%

Risk of hemorrhage from de novo cerebral aneurysms

Kemp

Fulkerson

Payner

et al. 2013

JNS

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“…48 Our own clinical data show an average time of 14.6 years, which is consistent with that reported in the literature. In a report by Giordano et al, 20 only 11.2% of de novo aneurysms occurred within 5 years, and 88.8% of the aneurysms were found 5 years later. In addition, according to anteriorly covered cases, the condition of the posterior circulation should be meticulously examined in patients with recurrent subarachnoid hemorrhage.…”

Section: Discussionmentioning

confidence: 87%

“…Basic information of case reports in review of literature (Supplementary Digital Content, Table 5, http://links.lww.com/ SCS/D690): Women account for 50% of case reports. 1,3,4,[20][21][22][23][24][25][26][27][28][29][30][31][32][33] The average age of patients at the original appearance is 42.5 years (95% CI: 36.9-48.2), and the proportion of patients with an original single aneurysm is 94.4%. The original rupture rate is 88.9%.…”

Section: Results Basic Informationmentioning

confidence: 99%

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Pathogenic Factors and Prognosis of De Novo Aneurysms After Aneurysm Clipping

Wang

Tang

et al. 2021

Journal of Craniofacial Surgery

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Objective: To confirm this hypothesis, this study aimed to explore the pathogenic factors, prognosis, and their relationship in de novo aneurysms and to reach a consensus on their management. Methods: First, the clinical data of 5 patients with de novo aneurysms from April 1998 to October 2021 were analyzed retrospectively. Then, the English literature on de novo aneurysms reported in Pubmed from 1985 to 2021 was systematically reviewed, and 18 case reports from 17 articles and 16 case series were identified. Univariate and multivariate analyses and modified Fisher test were used to analyze the relationship between pathogenic factors and prognosis. Results: Hypertension was noted in 60% of our clinical cases, 50% of the case series identified in the literature review, and 66.7% of the case reports in the literature review. In the case reports identified from our literature review, the proportion of original aneurysms in the anterior circulation was 96.3%. Moreover, in our 5 cases, all original aneurysms occurred in the anterior circulation. The rupture rate of original aneurysms in our 5 cases was 100%, and that of the cases reported in the literature review was 88.9%. Univariate logistic analysis showed that the time interval was related to the prognosis of de novo aneurysms with a P value of 0.048 and an odds ratio of 0.968 (95% confidence interval 0.938-1.000). Modified Fisher exact tests showed that patient age at the occurrence of de novo aneurysm P = 0.029) was related to the prognosis of de novo aneurysms. Conclusions: Hypertension, an original aneurysms located in the anterior circulation and rupture represent the pathogenic factors associated with de novo aneurysms. The time interval to de novo aneurysm and patient age at the occurrence of de novo aneurysm are predictive of prognosis. Based on the above information, we can prevent and improve the prognosis of de novo aneurysms.

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“…Reports of de novo cerebral aneurysms are rare, 16 with less than 20 described in the posterior circulation. 6,11 Known risk factors include hypertension, young age, multiple aneurysms, smoking, Marfan syndrome, moyamoya disease, and female sex. 7,10,12,13 The most probable mechanism is believed to be a change in the local hemodynamic environment.…”

Section: Discussionmentioning

confidence: 99%

De novo giant posterior cerebral artery aneurysm developing 25 years after basilar bifurcation aneurysm treatment using a Drake tourniquet: case report and implications for aneurysm follow-up

Martínez-Pérez¹,

Pelz

Lownie³

2018

Journal of Neurosurgery

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The objective of this paper was to report a rare complication of basilar artery (BA) tourniquet treatment of a giant basilar tip aneurysm, and to discuss possible causes for the formation of a de novo giant posterior cerebral artery (PCA) aneurysm. A 34-year-old woman underwent satisfactory treatment of a ruptured giant basilar bifurcation aneurysm by BA ligation (Drake tourniquet) in 1985. She presented 25 years later with a new aneurysm in the left PCA, successfully treated by coil embolization. To the authors' knowledge, this is the first case of de novo aneurysm formation on a PCA, and the first de novo aneurysm reported as a complication of BA ligation therapy by Drake tourniquet. Long-term follow-up is necessary in patients with treated cerebral aneurysms, particularly those occurring in young patients, those with multiple aneurysms, those with complex posterior circulation aneurysms, and those undergoing flow diversion or flow-altering therapies.

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De Novo Basilar Head Aneurysms -Two Case Reports-

Cited by 5 publications

References 14 publications

Risk of hemorrhage from de novo cerebral aneurysms

Risk of hemorrhage from de novo cerebral aneurysms

Pathogenic Factors and Prognosis of De Novo Aneurysms After Aneurysm Clipping

De novo giant posterior cerebral artery aneurysm developing 25 years after basilar bifurcation aneurysm treatment using a Drake tourniquet: case report and implications for aneurysm follow-up

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