Acta Neurochirurgica

, Volume 159, Issue 1, pp 93–100 | Cite as

Stent-assisted coiling embolization of tiny, wide-necked intracranial aneurysms

  • Yongtao Zheng
  • Yanbing Song
  • Dajun Liu
  • Yingjun Liu
  • Qiang Xu
  • Yanlong Tian
  • Bing Leng
Original Article - Vascular



Tiny, wide-necked intracranial aneurysms pose a significant therapeutic challenge for interventional neuroradiologists because of the small volume for microcatheterization and coil stabilization inside the aneurysm sac. We report our preliminary experience of stent-assisted coiling embolization of these aneurysms.


A total of 50 patients with 52 tiny, wide-necked aneurysms who were treated with stent-assisted coiling from January 2007 to December 2014 were reviewed retrospectively. Baseline characteristics, procedure-related complications, angiographic follow-up results and clinical outcomes were statistically analyzed.


All aneurysms were successfully treated with the stent-assisted coiling technique, and at the end of the procedure, aneurysm occlusion was complete for 45 (86.5 %), near complete for 3 (5.8 %) and incomplete for 4 (7.7 %). Procedural complications (1 intraprocedural rupture, 2 coil migrations and 1 aneurysm re-rupture) occurred in 4 (8 %) of 50 patients, resulting in permanent morbidity in 1 (2 %) patient and death in 1 (2 %) patient. Follow-up imaging was available in 43 (84.3 %) aneurysms for 6–31 months (mean, 13 months). Complete occlusion was achieved in 40 (93 %) of 43 aneurysms on long-term follow-up. One aneurysm with complete occlusion and one with incomplete occlusion after the initial embolization developed a significant recurrence (4.7 %). Clinical follow-up was available for 43 (86 %) of 50 patients at a mean of 36.7 months (range 15–66 months). Of these 43 patients, 42 (97 %) made an excellent recovery achieving a GOS of 5. None of the patients died or experienced re-bleeding or ischemic cerebral vascular events during follow-up.


Stent-assisted coiling embolization is feasible and relatively safe for tiny, wide-necked intracranial aneurysms of carotid arteries. Furthermore, long-term follow-up angiography indicated stent-assisted coiling seems to be effective in preventing early recanalization.


Stent-assisted coiling Tiny intracranial aneurysm Complication Recanalization 


Compliance with ethical standards


No funding was received for this research.

Conflict of Interest


Ethical approval

All procedures performed in 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. For this type of study formal consent is not required.

Informed consent

Informed consent was obtained from all individual participants included in the study.


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Copyright information

© Springer-Verlag Wien 2016

Authors and Affiliations

  • Yongtao Zheng
    • 1
  • Yanbing Song
    • 1
  • Dajun Liu
    • 2
  • Yingjun Liu
    • 1
  • Qiang Xu
    • 3
  • Yanlong Tian
    • 1
  • Bing Leng
    • 1
  1. 1.Department of Neurosurgery, Huashan Hospital, Shanghai Medical CollegeFudan UniversityShanghaiChina
  2. 2.Department of NeurosurgerySecond People HospitalTaizhouChina
  3. 3.Department of Radiology, Huashan Hospital, Shanghai Medical CollegeFudan UniversityShanghaiChina

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