Presentation
Two weeks history of headaches in a patient operated one year ago for central neurocytoma (total excision). The VP shunt was inserted two months before surgery.
Patient Data
Diffuse and extensive dural thickening with enhancement over the cerebral hemispheres and the cerebral posterior fossa with prominent venous sinuses in the posterior fossa, and enlarged pituitary gland in keeping with intracranial hypotension.
Postoperative cystic area with surrounding gliosis is noted in the left frontal parasagittal region (previous surgery for central neurocytoma).
No mass or abnormal enhancement is seen within the lateral ventricles or the septum pellucidum.
Case Discussion
MRI features of intracranial hypotension in a patient operated one year ago for a central neurocytoma.
The secondary intracranial hypotension may be iatrogenic (lumbar puncture or surgery), or over-shunting due to diversion devices, or traumatic.
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