LAUSR

BACKGROUND The superior cerebellar artery (SCA) aneurysms can be divided into two types: basilar artery (BA)-SCA junction aneurysm and peripheral SCA aneurysm. 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 previously conducted. METHODS A PubMed search of the published studies written in English was performed on Feb 13th, 2019 for patients who underwent endovascular treatment for peripheral SCA aneurysms. Segmentation of SCA was in accordance with the proposed nomenclature by Rodriguez-Hernandez A et al. An mRS score ≤ 1 was defined as good recovery. RESULTS Thirty-five articles reporting of 55 patients including 2 cases in our center were included in the final analysis. The inflicted patients (28 females, 50.9%) aged from 3 months to 79 years (46.22 ± 13.51 years). Forty-five (81.8%) patients presented with spontaneous subarachnoid hemorrhage with or without cerebellar hematoma. Forty-six (83.6%) patients experienced good recovery. Permanent or transient procedure-related complications occurred in 17 (17/49, 34.7%) patients during EVT. However, no fatal or server procedure-related complication occurred in the long run. 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 study is warranted to better elucidate the role of EVT in peripheral SCA aneurysms.