A large heterogeneous subdural haemorrhage has developed on the right, measuring up to 2.1 cm in thickness. This results in ipsilateral sulcal effacement, partial effacement of the right lateral ventricle, up to 16 mm subfalcine herniation to the left and right uncal herniation. The mid brain is distorted and compressed transversely with subtle asymmetrical low attenuation involving the right greater than left corticospinal tract within the cerebral peduncle, suspicious for ischaemia. No evidence of established infarction.