Hyperdense left parietooccipitofrontal subdural collection demonstrated measuring up to 20 mm in maximal depth, with resultant mass effect: sulcal effacement and partial effacement of the left lateral ventricle. White matter low attenuation in the left occipital, parietal and superior temporal lobes corresponds to the area of T2/FLAIR hyperintensity. Hypodensity also demonstrated within the posterior limb of the left internal capsule extending to the cerebral peduncle and pons. The extent of white matter hypodensity is stable in comparison to previous imaging.