Clinical and imaging outcome after EVT, stratified by SM grade III bAVMs subtypes
| SM grade III bAVMs subtype | bAVMs exclusion | Hemorrhagic complications | Ischemic complications | Permanent neurological deficits | Good clinical outcome |
| IIIA, S1V1E1 (29) | 26 (89.7%) | 5 (17.2%) | 2 (6.9%) | 2 (6.9%) | 23 (79.3%) |
| IIIB, S2V1E0 (13) | 11 (84.6%) | 1 (7.7%) | 1 (7.7%) | 0 (0.0%) | 12 (92.3%) |
| IIIC, S2V0E1 (23) | 19 (82.6%) | 7 (30.4%) | 2 (8.7%) | 2 (8.7%) | 20 (87.0%) |
| IIID, S3V0E0 (1) | 1 (100%) | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 1 (100%) |
bAVM, brain arteriovenous malformation; EVT, endovascular treatment; SM, Spetzler–Martin.