ReviewInterventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences2021
Flow-related posterior cerebral artery aneurysms with internal carotid artery occlusions: An institutional series.
Review in Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 6 citations in OpenAlex.
- Surgical management of refractory ischemic-side aneurysms in chronic internal carotid artery occlusion: insights from cases unfit for endovascular treatment.BMC surgery · 2025Article
- Intracranial aneurysm location: potential influencing factor in ruptures with internal carotid artery occlusion.BMC neurology · 2025Article
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Authors and funding
4 authors at 1 institution in 1 country.
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Abstract
backgroundAneurysm formation after internal carotid artery (ICA) occlusion has been described in animal models and human case series with alteration of cerebral blood flow dynamics considered an aetiological risk factor. Such de novo aneurysms have seldom been described in the posterior cerebral artery (PCA) with the majority observed in the anterior circulation collateral pathways.
methodsWe retrospectively reviewed our institutional database of posterior circulation aneurysms in patients with iatrogenic, atherosclerotic or congenital ICA occlusions. A comprehensive review of the online literature using the PubMed and Medline databases was performed to identify previous cases of PCA aneurysms that were considered 'flow-related'.
resultsWe present five patients with symptomatic or ruptured PCA aneurysms with ICA occlusions. Age at presentation ranged from 21-58 and aneurysm size from 3-12 mm. All cases had angiographic evidence of posterior-anterior flow via the ipsilateral posterior communicating artery (PComA). The clinical presentation, diagnostic imaging and management strategies are further discussed. A literature review identified only two previous reported cases.
conclusionTo our knowledge this is the first single centre series of posterior circulation aneurysms in patients with ICA occlusions that are considered to be 'flow-related.' The natural history of these rare lesions is unclear and the best management and surveillance strategy requires a patient-tailored approach by an experienced neurovascular team.
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