Aim:This 17-year retrospective study compared the outcomes and complications (such as recanalization and embolization) of stent-assisted coil (SAC) embolization for the treatment of cerebral aneurysms according to stent type.
Material and Methods:Since January 2006, 1,293 patients have been added to our institutional aneurysm database. We excluded cases with subarachnoid hemorrhage, those not classified as Raymond Roy Class 1, and those in which flow diverters were used. Cases involving the use of overlapping stents, Y-stenting, or multiple stents were also excluded. In total, 188 patients were included in the analysis. We recorded demographic information, aneurysm characteristics, and procedural details for all patients. Patients who did not undergo diffusion-weighted magnetic resonance imaging (MRI) within 1 day postoperatively or follow-up angiography within 6 months postoperatively were excluded.
Results:The 188 patients (129 females; mean age, 58 years) were treated for aneurysms of different sizes. Regrowth occurred in 21 patients, with the rate varying according to the stent type. In particular, the lower profile stent group had a lower regrowth rate compared to the nitinol laser stent group. The rate of postoperative infarction on diffusion-weighted MRI within 1 day postoperatively varied among stent types.
Conclusion:No stent demonstrated clear superiority for SAC embolization, indicating that stent selection should be based on surgeon preference. Despite the low regrowth rate, careful stent selection is essential, particularly for patients at high risk of ischemic stroke or regrowth. These findings provide valuable insights for optimizing the treatment of cerebral aneurysms using SAC embolization.
