X Basal ganglia hemorrhage CT head (without contrast; axial plane) of a patient with a history of chronic hypertension Hyperdense hemorrhage in the left basal ganglia is surrounded by hypodense perifocal edema (red overlay). The location is typical for hemorrhage from the lenticulostriate arteries as a result of long-standing hypertension. 1: head of caudate nucleus; 2: putamen; 3 and green overlay: internal capsule; 4: thalamus Arrowheads: calcified pineal gland; white circles: calcified choroid plexus