Journal of Korean Neurosurgical Society

The Korean Neurosurgical Society (대한신경외과학회)
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Is Stent-Assisted Coil Embolization for the Treatment of Ruptured Blood Blister-Like Aneurysms of the Supraclinoid Internal Carotid Artery Effective? : An Analysis of Single Institutional Experience with Pooled Data

  • Roh, Haewon (Department of Neurosurgery, Guro Hospital, Korea University College of Medicine) ;
  • Kim, Junwon (Department of Neurosurgery, Guro Hospital, Korea University College of Medicine) ;
  • Suh, Sang-il (Department of Radiology, Guro Hospital, Korea University College of Medicine) ;
  • Kwon, Taek-Hyun (Department of Neurosurgery, Guro Hospital, Korea University College of Medicine) ;
  • Yoon, Wonki (Department of Neurosurgery, Guro Hospital, Korea University College of Medicine)
  • Received : 2020.06.18
  • Accepted : 2020.08.17
  • Published : 2021.03.01
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Abstract

Objective : Given the high risk of rebleeding and recurrence of blood blister-like aneurysms (BBAs), we treated ruptured BBAs of the internal carotid artery (ICA) with stent-assisted coil embolization (SAC). This study aimed to evaluate the efficacy and safety of SACs. Methods : We retrospectively reviewed clinical and radiological data from eight patients with ruptured BBAs of the supraclinoid ICA. The modified Rankin Scale (mRS) was used to assess clinical outcomes, while radiological outcomes were evaluated on angiographs. For a pooled analysis, data from literature reporting the outcomes of ruptured BBAs treated with SAC were collected and analyzed in conjunction with our data. Results : In our cohort, the mean Raymond classification score was 1.57±0.53 immediately after initial endovascular treatment. There were no perioperative complications or rebleeding events during the follow-up period. The mean mRS score at patient discharge was 1.00±0.81 and improved to 0.28±0.48 by the last follow-up day. The recurrence rate was 25% with an asymptomatic presentation and successful treatment with multiple stent insertion. Pooled analysis of 76 cases of SAC revealed a complete occlusion rate immediately after treatment of 54.8%, rebleeding rate 7.94%, and recurrence rate 24.2%. Good clinical outcomes with mRS score 0-2 were observed in 89.9% by the last clinical follow-up. Total mortality rate was 7.7%. Conclusion : This treatment appears to not only minimize the hemodynamic burden on the fragile dome specific to this type of aneurysm, but also provides an opportunity for safe and effective treatment in recurrent cases.

Keywords

Acknowledgement

This research was supported by Korea University Grant K2023221.

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