Table 4.

Cerebrovascular findings in 55 latency-matched carotid dissections with and 55 carotid dissections without ischemic events

ArteryFindingIschemic events, n (%)p Value for ischemia vs no ischemia
Yes (n = 55)No (n = 55)
* Middle and anterior cerebral arteries.
Extracranial internal carotid arteryNormal3 (5)16 (29)<0.01
Stenosis ≤50%3 (5)9 (16)NS
Stenosis >50%5 (11)8 (15)NS
Stenosis >80% and occlusion43 (81)22 (40)<0.0001
Intracranial arteries‡Stenosis or occlusion9 (16)2 (4)<0.05
Median latency (range)Symptom onset, ultrasonography10 d (4–114 d)10 d (0–125 d)NS