CT scan shows a left temporal craniotomy and left temporal lobectomy. 9 mm hyperdensity along the left tentorium cerebelli is noted, in keeping with acute blood. It is unclear whether this represents extra or intra-axial blood. Further small foci of hyperdensities are seen along the surgical bed. Moderate bilateral pneumocephalus is in keeping with post-operative status. No midline shift. No hydrocephalus. Grey-white matter differentiation is preserved.