Endovascular Treatment for Peripheral Superior Cerebellar Artery Aneurysms: Current State and Future Considerations.


Department of Neurosurgery, The First Hospital of Jilin University, Changchun, China. Electronic address: [Email]


BACKGROUND : Superior cerebellar artery (SCA) aneurysms can be divided into 2 types: basilar artery (BA)-SCA junction aneurysms and peripheral SCA aneurysms. The peripheral SCA aneurysm is a distinct entity from its BA-SCA counterpart. No comprehensive literature review for endovascular management of peripheral SCA aneurysms has been conducted.
METHODS : A PubMed search of the published articles written in English was performed on February 13, 2019 for patients who underwent endovascular treatment for peripheral SCA aneurysms. Segmentation of SCA was in accordance with the proposed nomenclature by Rodriguez-Hernandez et al. A modified Rankin Scale score ≤1 was defined as good recovery.
RESULTS : Thirty-five articles reporting 55 patients including 2 cases in our center were included in the final analysis. The affected patients (28 females, 50.9%) were aged from 3 months to 79 years (46.22 ± 13.51 years). Forty-five patients (81.8%) presented with spontaneous subarachnoid hemorrhage with or without cerebellar hematoma. Forty-six patients (83.6%) experienced good recovery. Permanent or transient procedure-related complications occurred in 17/49 patients (34.7%) during endovascular treatment (EVT). However, no fatal or server procedure-related complication occurred in the long-term.
CONCLUSIONS : Peripheral SCA aneurysms are rare cerebrovascular lesions and should be treated as a specific entity. EVT is an efficient and safe option in peripheral SCA aneurysms. Permanent and fatal procedure-related complications are rare. Further prospective and larger-scale studies are warranted to better elucidate the role of EVT in peripheral SCA aneurysms.


Collateral circulation,Dissecting aneurysm,Endovascular treatment,Parent artery occlusion,Superior cerebellar artery aneurysm,