A yоung wоmаn with nо history of neurologic disorder is skiing аnd fаlls on the slope. Although she reports a headache and a bit of nausea immediately after the injury, she is otherwise neurologically intact. She decides to take a nap, Three hours later, friends find her in bed and won’t wake up but breathing albeit slowly. On evaluations in the emergency department, she has a fixed, dilated pupils. What is most likely to be found on a CT scan of this patient?