CT
Axial non-contrast
Axial bone window
Sagittal non-contrast
CT for this adolescent polytrauma patient showed: Longitudinal fractures of both petrous temporal bones more evident on the left involving the mastoid. Disrupting fracture of the sphenoid bone with haemosinus of the sphenoids and ethmoids, with consequent pneumocephalus and pneumorrhachis.Effaced cerebral ventricles and basal cisterns with no midline shift. Cerebral contusion of the left posterior parietal lobe as well as associated with subarachnoid haemorrhage. Follow up by CT two days later showed: absence of pneumocephalus and pneumorrhachis.