Table 6.

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