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Endoluminal reconstruction with flow diverter devices represents an innovative technique in the treatment of intracranial aneurysms.These new stents, self-expandable and of low porosity, are released through the microcatherization of the parent artery. The main goal of these systems is thereby rebuilding the vessel wall and excluding the aneurysmal formation of the arterial circulation.We show the preliminary results in treating 10 patients at Hospital de São José, Lisbon. These patients, with wide-necked (> 4 mm)or unfavorable dome/neck ratios (> 1.5) aneurysms, were treated with the PIPELINE® system, and angiographic control were made at three and six months. New control will be done at 12 months. The mean age of enrolled patients is 54.3 years; eight patients were female and two male. Aneurysms were incidentally discovered in two patients. The remaining patients were diagnosed during imaging investigation for headache (n = 3), visual field defect (n = 1), vertigo(n = 1) and at least one cranial palsy (n = 2). Only two patients had had prior subarachnoid hemorrhage and two patients underwent prior endovascular treatment with coils. The locations of aneurysms treated were the proximal segment of the middle cerebral artery(n = 1) and the paraophthalmic (n = 6), ophthalmic (n = 2) and cavernous (n = 4) internal carotid artery segments. Thirteen intracranial aneurysms were treated as three patients had multiple aneurysms. Control studies were conducted and shown an average degree of occlusion at three months of 74% and at six months of 86%. There was no reduction in size of one paraophthalmic artery aneurysm.The experience of this department is favorable to the use of flow-diverter devices to treat selected aneurysms. High occlusion rates were obtained given the existing challenges in the treatment of such aneurysms.

Sistemas de Derivação de Fluxo no Tratamento de Aneurismas Intra-cranianos – resultados aos seis Meses de Seguimento