Rescue waffle cone technique for managing stent dislodgement into a target aneurysm

Sep 28, 2026

Uploaded by McQueen

Case report on managing stent dislodgement during endovascular treatment of a wide-neck intracranial aneurysm using a modified “waffle cone technique.” Describes a 73-year-old woman with an unruptured basilar tip aneurysm who developed intra-procedural stent dislodgement into the target aneurysm during Y-stent-assisted coiling. Prompt recognition of the displaced stent and the use of a Solitaire AB stent enabled successful aneurysm securing while preserving parent vessel patency.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages5

Reading Time13 min

AccessFree to download

Introduction

Case description

Procedure and stent deployment

Case Report Journal of Cerebrovascular Endovascular Neurosurgery and Journal of Cerebrovascular and Endovascular Neurosurgery pISSN 2234-8565, eISSN 2287-3139, [https://doi.org/10.7461/jcen.2025.E2025.03.001](https://doi.org/10.7461/jcen.2025.E2025.03.001) Rescue waffle cone technique for managing stent dislodgement into a target aneurysm Jun Kyeung Ko Department of Neurosurgery, Biomedical Research Institute, Pusan National University Hospital, School of Medicine, Pusan National University, Busan, Korea J Cerebrovasc Endovasc Neurosurg. 2025 December;27(4):368-372 Received: 12 March 2025 Revised: 9 June 2025 Accepted: 26 June 2025 Correspondence to Jun Kyeung Ko Department of Neurosurgery, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Korea Tel +82-51-240-7257 Fax +82-51-244-0282 E-mail [redcheek09@naver.com](redcheek09@naver.com) ORCID [https://orcid.org/0000-0002-5652-7659](https://orcid.org/0000-0002-5652-7659) Stent-assisted coiling is an essential technique for managing wide-neck intracranial aneurysms. However, complications such as stent dislodgement can pose significant challenges, potentially compromising procedural success and patient outcomes. We present the case of a 73-year-old woman with an unruptured basilar tip aneurysm who experienced intra-procedural stent dislodgement into the target aneurysm during a Y-stent-assisted coiling attempt. Recognizing the instability of the displaced stent and the risk of further complications, we employed a modified “waffle cone technique” using a Solitaire AB stent to successfully secure the aneurysm while preserving parent vessel patency. This case highlights the importance of prompt recognition and innovative problem-solving strategies in managing stent-related complications during neuro-interventions. The rescue waffle cone technique represents a viable alternative for addressing complex stent dislodgement scenariosand improving patient outcomes. Keywords Cerebral aneurysm, Endovascular procedures, Stents, Waffle cone technique This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ([http://creativecommons.org/licenses/](http://creativecommons.org/licenses/)[ ](http://creativecommons.org/licenses/)[by-nc/4.0/](by-nc/4.0/)) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. INTRODUCTION Intracranial aneurysms are a significant cause of morbidity and mortality, with endovascular treatment emerging as a primary therapeutic approach. The advent of stent-assisted coiling has greatly enhanced the efficacy of endovascular management, particularly for wide-necked and complex aneurysms. However, stent placement carries potential complications, including thromboembolic events, in-stent stenosis, and stent dislodgement. Stent dislodgement is a rare but serious complication that can compromise the success of the procedure and pose significant risks to the patient.1)2)6)7) Understanding the causes, management strategies, and preventive measures associated with stent dislodgement is essential to improving patient outcomes. This case report aims to present our experience with stent dislodgement during the treatment of an intracranial aneurysm, highlighting the challenges faced, management strategies employed, and lessons learned from this complication. 368 [www.the-jcen.org](www.the-jcen.org) Copyright © 2025 by KSCVS and KoNES CASE DESCRIPTION A 73-year-old woman was incidentally diagnosed with an unruptured basilar tip aneurysm. Cerebral angiography revealed a cranially projecting 10×9 mm saccular aneurysm with a 9.3-mm-wide neck at the basilar tip (Fig. 1) . The aneurysm incorporated both posterior cerebral arteries (PCAs) . Considering the aneurysm’s location and size, as well as the patient’s age, stent-assisted coiling using the Y-stent technique

FAQs

What complication is the case report focused on?

The report focuses on intra-procedural stent dislodgement during stent-assisted coiling, which can threaten procedural success and patient outcomes.

Who is the patient described in the case?

The case describes a 73-year-old woman with an unruptured basilar tip aneurysm who experienced stent dislodgement during a Y-stent-assisted coiling attempt.

How was the stent dislodgement managed?

A modified “waffle cone technique” was used with a Solitaire AB stent to secure the aneurysm while preserving parent vessel patency.

Sep 28, 2026

Uploaded by McQueen