30 years Female (DOB:11/27/1985)Reason: eval s/p posterior fossa decompression and placement of 4th ventricular stent History: eval s/p posterior fossa decompression and placement of 4th ventricular stentPROVIDER/ATTENDING NAME: DAVID M FRIM DAVID M FRIM MRI brain:Since prior exam patient is undergone suboccipital craniotomy and fourth ventricle stent placement. There are T2 and FLAIR hyperintense foci now present along the cerebellar tonsils bilaterally. There are postsurgical changes present in the soft tissues behind the surgical site.A T2 and FLAIR hyperintense focus is present in the right periventricular white matter and frontal lobe which represents a prior ventriculostomy tract.CSF flow study demonstrates biphasic flow anterior to the brainstem and spinal cord at the level of foramen magnum and through the stent.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 are clear. The visualized portions of the mastoid air cells are clear. The visualized portions of the orbits are intact.MRI cervical spine:The cervical vertebral bodies are appropriate in overall alignment and height. The cervical spinal cord has normal signal characteristics and overall morphology. At C2-3 there is no significant compromise to the spinal canal or neural foramina.At C3-4 there is no significant compromise to the spinal canal or neural foramina.At C4-5 there is no significant compromise to the spinal canal or neural foramina.At C5-6 there is no significant compromise to the spinal canal or neural foramina.At C6-7 there is no significant compromise to the spinal canal or neural foramina.At C7-T1 there is no significant compromise to the spinal canal or neural foramina.The vertebral artery flow voids appear to be intact.
1.Since prior exam the patient is undergone decompressive suboccipital craniectomy and fourth ventricular stent placement. There are associated post surgical changes along the cerebellar tonsils and soft tissues of the upper neck and occipital calvarium.2.There is no evidence for syrinx or ventriculomegaly.