ArticleInterventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences2025
Tailoring endovascular strategy to posterior inferior cerebellar artery segment anatomy: Avoiding brainstem infarction in dissecting pseudoaneurysms.
Article in Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
BackgroundDissecting pseudoaneurysms of the posterior inferior cerebellar artery (PICA) are rare, high-risk lesions with outcomes heavily influenced by anatomical location. This study evaluates the relationship between PICA segmental anatomy, endovascular treatment strategy, and clinical outcomes.MethodsWe retrospectively analyzed 21 patients with dissecting PICA aneurysms treated endovascularly between 2013 and 2025. Aneurysms were anatomically classified by segment (P1-P5); P3 was further subdivided into P3A (proximal to the PICA loop) and P3B (distal to the loop). Primary outcome was discharge modified Rankin Scale (mRS ≤ 2; classified as favorable). Secondary outcomes included ischemic stroke and segment-specific treatment trends.ResultsOf 21 patients, 16 (76%) were female and 13 (62%) were White; mean age was 57.3 ± 15.5 years. Most aneurysms were small (<7 mm,
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