Moderate volume of acute subarachnoid haemorrhage within the basal cisterns, bilateral sylvian fissures, and anterior interhemispheric fissure. There is higher volume in the right sylvian fissure compared to the left. The pattern suggests a ruptured aneurysm, most likely at the right MCA bifurcation. There is intraventricular extension of haemorrhage into the 4th ventricle and occipital horn of the left lateral ventricle with associated hydrocephalus with particular enlargement of the temporal horns of the lateral ventricles.