Vasoconstriction: digital subtraction angiography

Sporadic cerebral amyloid angiopathy

Cerebral amyloid angiopathy is a common pathology in the aging brain, most often recognized in clinical practice as the cause of multiple, strictly lobar intracerebral hemorrhages, microbleeds, or superficial sulcal/meningeal bleeding. Advanced cerebral amyloid angiopathy is also associated with nonhemorrhagic brain lesions. A subset of cerebral amyloid angiopathy presents with subacute mental status changes, headache, seizures, and amyloid-related vascular inflammation.