Flow diverters in aneurysms beyond the circle of Willis: a multicenter retrospective study
10.3760/cma.j.cn115354-20240912-00562
- VernacularTitle:血流导向装置治疗Willis环远端动脉瘤的多中心回顾性研究
- Author:
Xin FENG
1
;
Chi HUANG
;
Runze GE
;
Chao PENG
;
Zongduo GUO
;
Shixing SU
;
Xin ZHANG
;
Xifeng LI
;
Aihua LIU
;
Chuanzhi DUAN
Author Information
1. 南方医科大学珠江医院神经外科中心脑血管病外科，国家临床重点专科，脑血管病诊断与治疗教育部工程研究中心，广东省普通高校脑功能修复与再生重点实验室，广州 510282
- Publication Type:Journal Article
- Keywords:
Intracranial aneurysm;
Flow diverter;
Distal aneurysm;
Circle of Willis
- From:
Chinese Journal of Neuromedicine
2025;24(1):8-15
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the efficacy and safety of off-label use of flow diverters (FDs) in aneurysms beyond the circle of Willis.Methods:Seventy-one patients with aneurysms beyond the circle of Willis treated with FDs from January 2016 to September 2023 at Department of Cerebrovascular Surgery, Neurosurgery Center (Zhujiang Hospital of Southern Medical University), Department of Neurosurgery (Guangdong Provincial People's Hospital), Department of Neurosurgery (First Affiliated Hospital of Chongqing Medical University), and Department of Neurosurgery (Beijing Tiantan Hospital, Capital Medical University) were selected. The clinical and imaging data of these patients were analyzed retrospectively, and the clinical characteristics, aneurysm characteristics, endovascular treatments, perioperative complications, and clinical and imaging follow-up results were summarized and analyzed.Results:Among the 71 patients, 22 (31.0%) had ischemic stroke history and 43 (60.6%) had hypertension history. A total of 76 aneurysms were found, including 5 aneurysms (6.6%) at the anterior communicating artery, 10 (13.2%) at the anterior cerebral artery, 53 (69.7%) at the middle cerebral artery, and 8 (10.5%) at the posterior cerebral artery. The median aneurysm size (Inter Quartile Range) was 5.65 (3.63, 10.12) mm, and mean diameter of the parent artery was (2.70±0.57) mm. A total of 80 FDs were used, including 38 (47.5%) Pipeline embolization devices and 42 (52.5%) Tubridge embolization devices; the implantation success rate was 98.8% (79/80). Seven patients (9.9%) had perioperative complications, of which 2 (2.8%) were permanent (1 patient with visual field defect and 1 patient with intracranial hemorrhage). Seventy-one patients had clinical follow-up for (19.73±11.90) months, of which 68 patients (95.8%) had good outcome (modified Rankin scale score of 0-2), 10 patients (14.1%) had ischemic complications, and one patient (1.4%) had hemorrhage complications. Sixty-seven aneurysms (88.2%) underwent angiographic follow-up for 7 (6-12) months, of which 44 aneurysms (65.7%) were completely occluded and 10 (14.9%) had in-stent stenosis.Conclusion:The results of this study preliminarily confirm that off-label use of FDs is relatively safe and effective in aneurysms beyond the circle of Willis.
