Overlapping Enterprise and LVIS stents for the treatment of intracranial vertebral dissecting aneurysms

Objective To evaluate the efficacy and safety of overlapping Enterprise and LVIS stents-assisted coiling for the treatment of vertebral dissecting aneurysms. Methods From January 2015 to June 2017, 22 patients with vertebral dissecting aneurysms were treated with overlapping Enterprise and LVIS stents-assisted coiling therapy at Department of Neurosurgery, the First Affiliated Hospital of Harbin Medical University and consecutively enrolled into this study. The clinical data were retrospectively evaluated. The degree of coiling was assessed to determine the efficacy of treatment. The incidence of new or recurrent stroke due to lesioned vessel was used to assess the safety. Patients’ outcomes were evaluated based on modified Rankin Scale (mRS). Results Complete occlusion was achieved in 4 (18.2%) patients, nearly occlusion in 7 (31.8%) and partial occlusion in 11 (50.0%). One (4.5%) patient died during peri-procedural period due to re-rupture. The follow-up periods ranged from 4 to 21 months with an average of 9.4±4.8 months. No complications were seen in other patients with mRS of 0. Imaging follow-up was conducted in 10 patients post procedure. Complete occlusion was achieved in 9 patients and parent artery was occluded in 1. Conclusion Overlapping Enterprise and LVIS stents-assisted coiling may be an effective and safe therapy for vertebral dissecting aneurysms. Key words: Intracranial aneurysm; Aneurysm, dissecting; Vertebral artery; Endovascular procedures; Treatment outcome