Patterns of cerebrovascular disease in Japanese and other population groups in Hawaii: an angiographical study.

Angiograms of the carotid system were analyzed for incidence and type of intracranial and extracranial lesions in 296 patients with a final diagnosis of non-hemorrhagic stroke. These patients represent all the major ethnic groups in Hawaii. A significant difference was found between the ratio of frequency of involvement of the extracranial and intracranial vessels in Caucasian and that in the Hawaiian-born Japanese populations, similar to that reported by others in native Japanese. The Filipino, Chinese, Hawaiian and part-Hawaiian populations showed no such significant difference.