Felix Hendrik Pahl1, Matheus Fernandes de Oliveira2, Marcos de Queiroz Teles Gomes3, Alberto Carlos Capel Cardoso3, José Marcus Rotta4. 1. 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. 2. 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. Electronic address: mafernoliv@yahoo.com.br. 3. Department of Neurosurgery, Hospital Sirio Libanês, São Paulo, Brazil; Department of Neurosurgery, DFV Neuro, São Paulo, Brazil. 4. Department of Neurosurgery, Hospital do Servidor Público Estadual de São Paulo, IAMSPE, São Paulo, Brazil.
Abstract
INTRODUCTION: Blister-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. METHODS: From 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. RESULTS: In 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. CONCLUSIONS: Surgical treatment of BAs may be effective and have acceptable complications and outcomes.
INTRODUCTION: Blister-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. METHODS: From 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. RESULTS: In 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. CONCLUSIONS: Surgical treatment of BAs may be effective and have acceptable complications and outcomes.