Diagnosis: Compression of brainClinical question: s/p Chiari decompression, 1 year follow up; PLEASE DO CSF FLOW STUDYSigns and Symptoms: 1 year follow up post Chiari decompressionComments: w CSF flow study | Cervical spine:The cervical vertebral bodies are appropriate in overall alignment and height. The cervical spinal cord has normal signal characteristics and overall morphology. There is redemonstration of a syrinx which has its superior tip at the level of the C2 vertebral body and extends into the thoracic spinal cord to the level of T10 vertebral body. In the cervical spine the syrinx measures 4.5 x 14 mm axial dimensions on the current exam at the C4-5 vertebral body level. This is stable compared to the prior exam from 10/27/2014. The patient is status post posterior fossa decompression and laminectomies at C1, C2, C3 and C4. CSF flow study demonstrates good flow at the level of the foramen magnum. A previously noted fluid collection at the surgical site superficial to the duraplasty site is not visualized on the current exam.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.MRI thoracic spine:The thoracic vertebral bodies are appropriate in the overall alignment and height. The thoracic spinal cord has normal signal characteristics and overall morphology. There is no compromise of thoracic spinal canal or exiting nerve roots. There is a syrinx present which continues from the cervical cord and ends at the T10 vertebral body level.
1.There is no significant change in size of the patient's syrinx.2.CSF flow appears appropriate at the level of foramen magnum.3.Status post posterior fossa decompression and multilevel upper cervical spine laminectomies. A previously noted fluid collection superficial to the duraplasty site is no longer identified.