Case Notes
History
40 yo male with prior traumatic brain injury and craniotoy or subdural hematoma 4 years earlier. Now severe headaches.Exam
Sagittal noncontrast MR T1-w
Prior Study
Axial head T1-w enhanced MR1. Prior trauma and prior right craniotomy for subdural drainage.
2. Evidence of unexplained incisural downward displacement and significant tonsillar herniation. These findings and history added to the symptoms of severe headache are consistent with intracranial hypotension.