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J Cerebrovasc Endovasc Neurosurg. 2018 Jun;20(2):106-111. doi: 10.7461/jcen.2018.20.2.106. Epub 2018 Jun 30.

Recurrence of Small Cerebral Aneurysms (< 4 mm) Treated Endovascularly Using Target® Nano™ Coils.

Author information

1
Department of Neurosurgery, Inje University Haeundae Paik Hospital, Busan, Korea.
2
Department of Neurosurgery, Inje University Busan Paik Hospital, Busan, Korea.
3
Department of Radiology, Inje University Busan Paik Hospital, Busan, Korea.

Abstract

Objective:

In our series, endovascular coiling with Target® Nano™ coils (Stryker Neurovascular, Fremont, CA, USA) with diameters of 1 or 1.5 mm exhibited favorable technical feasibility in the treatment of small cerebral aneurysms (< 4 mm). However, little is known about the recurrence of small cerebral aneurysms treated using Target® Nano™ coils. We investigated recurrence following the treatment of small cerebral aneurysms using Target® Nano™ coils.

Materials and Methods:

Between January 2012 and November 2013, 143 patients with 148 small cerebral aneurysms (< 4 mm) were included our study. A total of 135 cerebral aneurysms (91.2%) were unruptured; 45 cerebral aneurysms (30.4%) were treated by endovascular coiling using Target® Nano™ coils. Follow-up radiological images were obtained for 132 cerebral aneurysms (89.2%) over a range of 3 to 58 months (mean, 34.3 months; standard deviation, 14.2).

Results:

In the group treated with Target® Nano™ coils, radiological outcomes revealed complete occlusion in 33 (73.3%), residual necks in eight (17.8%), and residual sacs in four (8.9%) cases. Follow-up radiological outcomes revealed complete occlusion in 35 (77.8%) and residual necks in four (8.9%) cases that exhibited stable coil masses. In the group that was not treated with Target® Nano™ coils, radiological outcomes revealed complete occlusion in 69 (67%), residual necks in 18 (17.5%), and residual sacs in 16 (15.5%) cases. Follow-up radiological outcomes revealed complete occlusion in 87 (84.5%) and residual necks (5.8%) in six cases that exhibited stable coil masses. No significant differences were observed in the radiological outcomes or follow-up radiological outcomes between the two groups. No recurrences or retreatments occurred in our series.

Conclusion:

Endovascular treatment using Target® Nano™ coils may be a robust treatment option for small cerebral aneurysms (< 4 mm).

KEYWORDS:

Drability of small cerebral aneurysm coil embolization; Edovascular treatment; Rcurrence of small cerebral aneurysms coil embolization; Target Nano coils

Conflict of interest statement

Disclosure: The authors have no conflict of interest concerning the materials or methods used in this study or the findings specified in this paper.

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