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Peripheral intracranial aneurysms: management challenges in 60 consecutive cases Nussbaum ES; Madison MT; Goddard JK; Lassig JP; Nussbaum LAJ Neurosurg 2009[Jan]; 110 (1): 7-13OBJECT: The authors report the management and outcomes of 55 patients with 60 intracranial aneurysms arising distal to the major branch points of the circle of Willis and vertebrobasilar system. METHODS: Between July 1997 and December 2006, the authors' neurovascular service treated 2021 intracranial aneurysms in 1850 patients. The database was reviewed retrospectively to identify peripherally located intracranial aneurysms. Aneurysms that were mycotic and aneurysms that were associated with either an arteriovenous malformation or an atrial myxoma were excluded from review. RESULTS: The authors encountered 60 peripheral intracranial aneurysms in 55 patients. There were 42 small, 7 large, and 11 giant lesions. Forty-one (68%) were unruptured, and 19 (32%) had bled. Fifty-three aneurysms were treated surgically by using direct clip reconstruction in 26, trapping or proximal occlusion with distal revascularization in 21, excision with end-to-end anastomosis in 3, and circumferential wrap/clip reconstruction in 3. Coils were used to treat 6 aneurysms, and 1 was treated by endovascular parent artery occlusion. Overall, 49 patients had good outcomes, 4 were left with new neurological deficits, and 2 died. CONCLUSIONS: Peripherally situated intracranial aneurysms are rare lesions that present unique management challenges. Despite the fact that in the authors' experience these lesions were rarely treatable with simple clipping of the aneurysm neck or endovascular coil occlusion, preservation of the parent artery was possible in most cases, and the majority of patients had a good outcome.|*Neurosurgical Procedures[MESH]|Adolescent[MESH]|Adult[MESH]|Aged[MESH]|Aged, 80 and over[MESH]|Cerebral Angiography[MESH]|Cerebral Revascularization[MESH]|Child[MESH]|Child, Preschool[MESH]|Circle of Willis/diagnostic imaging/*surgery[MESH]|Female[MESH]|Humans[MESH]|Intracranial Aneurysm/diagnostic imaging/*surgery[MESH]|Male[MESH]|Middle Aged[MESH]|Monitoring, Intraoperative[MESH]|Postoperative Complications/etiology/therapy[MESH]|Retrospective Studies[MESH]|Tomography, X-Ray Computed[MESH]|Treatment Outcome[MESH]|Ventriculoperitoneal Shunt[MESH] |
