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Residuals, recurrences and re-treatment after endovascular repair of intracranial aneurysms: A retrospective methodological comparison

Froelich, JJ, Cheung, N, de Lange, JAB, Monkhorst, J, Carr, MW and DeLeacy, R 2019 , 'Residuals, recurrences and re-treatment after endovascular repair of intracranial aneurysms: A retrospective methodological comparison' , Interventional Neuroradiology , pp. 1-10 , doi:

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Objective: Incomplete aneurysm occlusions and re-treatment rates of 52 and 10-30%, respectively, have been reported following endovascular treatment of intracranial aneurysms, raising clinical concerns regarding procedural efficacy. We compare residual, recurrence and re-treatment rates subject to different endovascular techniques in both ruptured and unruptured intracranial aneurysms at a comprehensive state-wide tertiary neurovascular centre in Australia.Methods: Medical records, procedural and follow-up imaging studies of all patients who underwent endovascular treatment for intracranial aneurysms between July 2010 and July 2017 were reviewed retrospectively. Residuals, recurrences and re-treatment rates were assessed regarding initial aneurysm rupture status and applied endovascular technique: primary coiling, balloon- and stent-assisted coiling and flow diversion.Results: Among 233 aneurysms, residual, recurrence and re-treatment rates were 27, 11.2 and 9.4%, respectively. Compared with unruptured aneurysms, similar residual and recurrence (p > .05), but higher re-treatment rates (4.5% vs. 19%; p Conclusions: Residuals and recurrences after endovascular treatment of intracranial aneurysms are less common than previously reported. Stent assistance and flow diversion seem associated with reduced recurrence- and re-treatment rates, when compared with primary- and balloon-assisted coiling. Restrained use of stents in ruptured aneurysms may be a contributing factor for higher recurrence/retreatment rates compared to unruptured aneurysms.

Item Type: Article
Authors/Creators:Froelich, JJ and Cheung, N and de Lange, JAB and Monkhorst, J and Carr, MW and DeLeacy, R
Keywords: endovascular, intracranial aneurysm, recurrence, residual
Journal or Publication Title: Interventional Neuroradiology
Publisher: Sage Publications Ltd.
ISSN: 1591-0199
DOI / ID Number:
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Copyright The Author(s) 2019

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