Amyloid angiopathy is a common pathological finding in Alzheimer's disease. It usually involves leptomeningeal and cortical vessels but spares the white matter. It may cause lobar cerebral hemorrhages at a late stage of the disease. We report a case of Alzheimer's disease at an early stage with diffuse lesions of amyloid angiopathy including some within the white matter, apparently responsible for 2 deep and 1 superficial cerebral hemorrhages.