cerebral amyloid angiopathy

congophilic angiopathy vascular amyloidosis affecting small and medium-sized arteries of the leptomeninges and cerebral cortex, resulting in microinfarcts or in hemorrhage; it may be asymptomatic or may result in hemorrhagic stroke or dementia. Most cases are sporadic and occur most often in the elderly. A hereditary form with autosomal dominant inheritance also exists.