Table 2.
Description of additional lesions of cerebropetal arteries on the angiograms (n = 43), and of collateral blood flow patterns
| All patients n = 43 | ||||
|---|---|---|---|---|
| Additional lesions cerebropetal arteries | (n) | |||
| CCA stenosis | 2/0a | |||
| Occlusion | 4/4a | |||
| ECA stenosis | 2/7a | |||
| Occlusion | 1/1a | |||
| VA unilateral stenosis | 16 | |||
| Unilateral occlusion | 2 |
| Collateral blood flow pathwaysb | n (%) | Only ACA | Only MCA | ACA + MCA |
|---|---|---|---|---|
| PComA | 26 (90) | 0 | 8 | 18 |
| AComA (via contralateral OphthA) | 3 (9) | 1 | 0 | 2 |
| OphthA | 23 (70) | 2 | 7 | 14 |
| Leptomeningeal | 14 (42) |
aOn the symptomatic side/asymptomatic side
bCollateral blood flow towards the symptomatic hemisphere via the PComA could be assessed in 29 patients, via the AComA in 34 patients and via the OphthA and leptomeningeal vessels in 33 patients. Collateral blood flow is further specified for filling of only ACA, only MCA or both ACA and MCA branches