Reason: eval for pseudomeningiocele. CINE flow studies History: s/p chiari decompression with low pressure headache There is no evidence for ventriculomegaly.CSF flow appears to be disrupted at the level of the foramen magnum. The CSF at the foramen magnum is partially obliterated.The patient is status post chiari decompression with suboccipital craniectomy and posterior arch of C1 removal. There are postoperative changes present with local soft tissue swelling and minor patchy signal changes in the cerebellar tonsils.No abnormal enhancing mass lesions are appreciated intracranially. No intracranial hemorrhage is identified. No edema is identified within the brain parenchyma.Normal vascular flow voids are present in the distal carotid and vertebral arteries, the basilar artery and the proximal anterior, middle and posterior cerebral arteries as well as the internal cerebral veins and superior sagittal sinus.The visualized portions of the paranasal sinuses demonstrate minor opacities.. The visualized portions of the mastoid air cells are clear. The visualized portions of the orbits are intact.
1.Chiari one malformation status post recent decompression. The CSF flow is diminished at the level of the foramen magnum.