There is a large right parietal/temporo/occipital/temporal haematoma measuring approximately 5.4cm x 3.7m with a large amount of surrounding oedema. There is significant mass-effect, characterised by right cortical sulcal effacement, compression of the right lateral and third ventricles, right uncal herniation and 8mm of leftward midline shift. Temporal horn dilatation is consistent with early hydrocephalus.
CTA COW (not shown)
The extracranial vessels, circle of willis and vertebrobasilar system opacify normally. No evidence of aneurysm, vascular malformation, dissection or significant stenosis.