no intra-axial or extra-axial haemorrhage
no calvarial fracture
large extra-axial CSF attenuating lesion is seen occupying the left middle cranial fossa splaying the Sylvian fissure and displacing the frontal, parietal and temporal lobes
secondary mass effect is seen in the form of effacement of left cerebral hemispheric sulci, mild midline shift to right, effaced ipsilateral lateral ventricle
no transtentorial herniation