Fig. 2

The clinical course of intracranial lesions in the head computed tomography (CT). A Head CT immediately after the head injury showed cerebral contusion in the left frontal lobe and a left subacute subdural hematoma (performed at a previous hospital). B Two hours after the head injury, the left subacute subdural hematoma was not significantly changed, but the brain contusion worsened. C Seven hours after the head injury, the hematoma in the left frontal lobe was markedly enlarged and had perforated into the ventricle