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Stent-assisted coiling of intracranial aneurysms using LEO stents: long-term follow-up in 153 patients

  • Interventional Neuroradiology
  • Published:
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Abstract

Purpose

Coiling associated with placement of a self-expandable intracranial stent has improved the treatment of intracranial wide-necked aneurysms. Little is known, however, about the durability of this treatment. The purpose of this report is to present our experience with the LEO stent and to evaluate the complications, effectiveness, and long-term results of this technique.

Methods

We analyzed the records of 155 intracranial unruptured aneurysms that were treated by stent-assisted coiling with a LEO stent between 2008 and 2012. Procedural, early post-procedural, and delayed complications were recorded. Clinical and angiographic follow-up of patients was conducted over a period of at least 36 months.

Results

No procedural mortality was observed. One-month morbidity was observed in 14 out of 153 patients (9,15%). One hundred thirty-eight patients (with 140 aneurysms) had clinical and angiographic follow-up for more than 36 months. No aneurysm rupture was observed during follow-up. Four patients presented an intra-stent stenosis at 8 months, and 6 patients who had an early recurrence were retreated. Final results showed 85% complete occlusion, 13% neck remnants, and 2% stable incomplete occlusion.

Conclusion

Stent-assisted coiling with the LEO stent is a safe and effective treatment for unruptured intracranial aneurysms. The long-term clinical outcomes with the LEO stent are excellent with a high rate of complete occlusion that is stable over time.

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Authors and Affiliations

  1. Unité de NeuroInterventionnelle, Hôpital Pasteur 2, 06000, Nice, France

    Jacques Sedat, Yves Chau & Marina Sachet

  2. Aix Marseille University, IRD, INSERM, SESSTIM, Marseille, France

    Jean Gaudart

  3. Unité d’Ultrasons, Hôpital Pasteur 2, Nice, France

    Stephanie Beuil

  4. Unité de Neurochirurgie, Hôpital Pasteur 2, Nice, France

    Michel Lonjon

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  1. Jacques Sedat
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Correspondence to Jacques Sedat.

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All procedures performed in the studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

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Sedat, J., Chau, Y., Gaudart, J. et al. Stent-assisted coiling of intracranial aneurysms using LEO stents: long-term follow-up in 153 patients. Neuroradiology 60, 211–219 (2018). https://doi.org/10.1007/s00234-017-1965-1

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