Breakdown by Cognard type, hemorrhage status on presentation, and presence of a common collector channel
| Cognard Type | No. | Hemorrhagic Presentation (No.) | Common Channel (No.) (%) |
|---|---|---|---|
| 1 | 15 | 0 | 14 (93%) |
| IIa | 12 | 0 | 5 (42%) |
| IIb | 0 | 0 | NA |
| IIab | 3 | 0 | 1 (33%) |
| III | 6 | 4 | 2 (33%) |
Note:—NA indicates not applicable.