Findings in the carotid and the vertebrobasilar system observed at brain autopsy
| Brain autopsy findings | N=534 |
| Thrombus in the internal carotid artery | 27 (5%) |
| Hyaline degeneration of the basilar/vertebral artery | 113 (21%) |
| Mild atherosclerosis of the basilar/vertebral artery | 57 (11%) |
| Moderate atherosclerosis of the basilar/vertebral artery | 137 (26%) |
| Severe atherosclerosis of the basilar/vertebral artery | 8 (28%) |
| Basilar/vertebral artery aneurysm | 28 (5%) |
| Thrombus in the basilar artery | 13 (2%) |
| Dissection in the basilar artery/internal carotid artery | 0 |