CAA-related perivascular inflammation

(A) T2 weighted axial MR image shows periventricular white matter hyperintensity in a patient who presented with memory difficulties.
(B) Gradient echo MR image from the same patient shows multiple low intensity foci (arrows) consistent with microhemorrhages, which are not seen on the T2 weighted image (A). The microhemorrhages are located peripherally, as opposed to hypertensive related hemorrhages that may occur centrally.
(C) FLAIR MR image demonstrates patchy and confluent periventricular white matter hyperintensity.