• Felix Hendrik Pahl, Matheus Fernandes de Oliveira, Teles Gomes Marcos de Queiroz Mde Q Department of Neurosurgery, Hospital Sirio Libanês, São Paulo, Brazil; Department of Neurosurgery, DFV Neuro, São Paulo, Brazil., Alberto Carlos Capel Cardoso, and José Marcus Rotta.
• Department of Neurosurgery, Hospital do Servidor Público Estadual de São Paulo, IAMSPE, São Paulo, Brazil; Department of Neurosurgery, Hospital Sirio Libanês, São Paulo, Brazil; Department of Neurosurgery, DFV Neuro, São Paulo, Brazil.
• World Neurosurg. 2016 May 1; 89: 376-81.

IntroductionBlister-like aneurysms (BAs) are usually defined as arterial lesions arising from nonbranching sites on intracranial arteries. Because of specific peculiarities such as different pathophysiology, fragility of the aneurysmal wall, high risk of intraoperative bleeding, and high probability of losing parent vessel patency, their treatment is controversial, and both endovascular and surgical options have been reported.MethodsFrom 2006 to 2015 (10 years), 7 aneurysms in 6 patients were treated. We retrospectively reviewed the records of these patients to analyze clinical pictures and outcomes, which are expressed as modified Rankin Score.ResultsIn our sample of 7 aneurysms in 6 patients, all BAs were successfully treated (complete exclusion in 100% on follow-up angiography). A good outcome (modified Rankin Score = 0) was achieved in all patients, with no difference related to aneurysm size and location. There was no mortality.ConclusionsSurgical treatment of BAs may be effective and have acceptable complications and outcomes.Copyright © 2016 Elsevier Inc. All rights reserved.

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