Chun Fang
Shanghai Tongji hospital, Tong ji University, China
Title: Endovascular treatment of carotid siphon aneurysms using Willis covered stent: A single-center experience
Biography
Biography: Chun Fang
Abstract
Objective: To report the clinical results and the initial clinical experience of endovascular isolation with Willis covered stent for carotid siphon aneurysms in 57 patients.
Methods: Between November 2013 and December 2016, a total of 57 patients who presented with carotid siphon aneurysms were treated with Willis covered stent. Results of procedures, technical events and complications were recorded. Clinical and imaging follow-ups were performed at 3 months after endovascular procedures.
Results: Placement of the Willis covered stent was successful in all patients. Immediate angiography revealed complete exclusion of aneurysms in 48 patients (84%), while endoleak happened in 9 patients (16%). Procedure-related complications occurred in 3 cases, including displacement of the covered stent in 1 patient, acute in-stent thrombosis in 1 patient and microwire-related intracranial hemorrhage in 1 patient. The angiographic follow-ups were done in 49 patients. Complete exclusion of aneurysms was shown in 47 patients. Endoleak was present only in 2 patients. No aneurysm recurrence was observed. 44 patients showed good parent artery patency, while the other 5 patients showed mild to moderate asymptomatic in-stent stenosis. During the follow-up period, no ischemic or hemorrhagic event was found. The mRS scores at follow-ups were 0 to 2 in 56 patients and over 2 in 1 patient.
Conclusions: The treatment of siphon aneurysms with Willis covered stent implantation resulted in satisfactory clinical outcomes. Willis covered stent seems safe and feasible for siphon aneurysms treatment, which still needs to be confirmed by longer follow-ups and controlled studies with larger samples.