1. Microsurgery of residual or recurrent complex intracranial aneurysms after coil embolization - a quest for the ultimate therapy.
- Author
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Pirayesh A, Ota N, Noda K, Petrakakis I, Kamiyama H, Tokuda S, and Tanikawa R
- Subjects
- Adult, Aged, Aged, 80 and over, Aortic Dissection diagnostic imaging, Embolization, Therapeutic trends, Endovascular Procedures methods, Endovascular Procedures trends, Female, Humans, Intracranial Aneurysm diagnostic imaging, Male, Microsurgery trends, Middle Aged, Neurosurgical Procedures methods, Neurosurgical Procedures trends, Recurrence, Reoperation trends, Retrospective Studies, Treatment Outcome, Aortic Dissection surgery, Blood Vessel Prosthesis trends, Embolization, Therapeutic methods, Intracranial Aneurysm surgery, Microsurgery methods, Reoperation methods
- Abstract
The long-term stability of coil embolization (CE) of complex intracranial aneurysms (CIAs) is fraught with high rates of recanalization. Surgery of precoiled CIAs, however, deviates from a common straightforward procedure, demanding sophisticated strategies. To shed light on the scope and limitations of microsurgical re-treatment, we present our experiences with precoiled CIAs. We retrospectively analysed a consecutive series of 12 patients with precoiled CIAs treated microsurgically over a 5-year period, and provide a critical juxtaposition with the literature. Five aneurysms were located in the posterior circulation, 8 were large-giant sized, 5 were calcified/thrombosed. One presented as a dissecting-fusiform aneurysm, 9 ranked among wide neck aneurysms. Eight lesions were excluded by neck clipping (5 necessitating coil extraction); 1 requiring adjunct CE. The dissecting-fusiform aneurysm was resected with reconstruction of the parent artery using a radial artery graft. Three lesions were treated with flow alteration (parent artery occlusion under bypass protection). Mean interval coiling-surgery was 4.6 years (range 0.5-12 years). Overall, 10 aneurysms were successfully excluded; 2 lesions treated with flow alteration displayed partial thrombosis, progressing over time. Outcome was good in 8 and poor in 4 patients (2 experiencing delayed neurological morbidity), and mean follow-up was 24.3 months. No mortality was encountered. Microsurgery as a last resort for precoiled CIAs can provide-in a majority of cases-a definitive therapy with good outcome. Since repeat coiling increases the complexity of later surgical treatment, we recommend for this subgroup of aneurysms a critical evaluation of CE as an option for re-treatment.
- Published
- 2021
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