MRA images with matched histology for a 73-year-old man with a right cerebral ischemic event. Hyperintense signal intensity on the postcontrast (arrow, A) and mask (arrow, B) CE-MRA images (asterisk indicates the lumen) corresponds to red staining representing IPH on histology (C, Movat pentachrome stain). Immunostaining for glycophorin A (D) confirms the presence of erythrocytes (dark brown staining) mixed with cholesterol clefts (arrows, D) for a region within the core (box, C).