dAVF characteristics
| All Patients (n = 178) | dAVF and CVT (n = 55)a | dAVF Only (n = 123)b | |
|---|---|---|---|
| Cognard dAVF classification (n/N) (%) | |||
| Benign | |||
| I | 58/178 (33) | 23/55 (42) | 35/123 (28) |
| IIa | 28/178 (16) | 12/55 (22) | 16/123 (13) |
| Aggressive | |||
| IIb | 25/178 (14) | 16/55 (29) | 9/123 (7) |
| IIa+b | 15/178 (8) | 8/55 (15) | 7/123 (6) |
| III | 33/178 (19) | 6/55 (11) | 27/123 (22) |
| IV | 40/178 (22) | 4/55 (7) | 36/123 (29) |
| V | 2/178 (1) | 0/55 | 2/123 (2) |
| dAVF treatment type (n/N) (%) | |||
| Conservative | 61/178 (34) | 42/55 (39) | 38/123 (31) |
| Endovascular only | 113/178 (63) | 36/55 (65) | 77/123 (63) |
| Surgical resection only | 8/178 (4) | 2/55 (4) | 6/123 (5) |
| Endovascular + surgical resection | 14/178 (8) | 5/55 (9) | 9/123 (7) |
| Endovascular + surgical resection + stereotactic radiation therapy | 2/178 (1) | 2/55 (4) | 0/123 |