Compression of brain [G93.5] / Syringomyelia and syringobulbia [G95.0], Reason for Study: ^Reason: chiari malformation decompression, thoracic syrinx, please do with csf flow study History: worsening symptoms, neck pain , arm History: neck and arm pain MRI C-SPINECervical spine alignment is normal.There is evidence of C1 to C3 laminectomies, suboccipital craniectomy and cauterization of bilateral cerebellar tonsils for Chiari decompression.Small syrinx in cervical spine about 1mm diameter on axial scan and slightly more prominent at the level of C5, unchanged since prior scan.No evidence of spinal canal stenosis.Cervical CSF flow studyBiphasic CSF flow through the foramen magnum anterior to the brainstem and through the posterior aspect of the cerebellar tonsil.Comparing to prior study, no definitive interval change is seen.Thoracic MRIThoracic vertebral alignment is normal.Again syrinx is seen to the level of T10, unchanged in terms of diameter and extent since prior scan.No evidence of spinal canal stenosis.
1. Stable cervical and thoracic syrinx in terms of size and extent since prior scan.2. Unchanged maintained biphasic CSF flow anterior to the brainstem and posterior to the cerebellar tonsil since prior scan. 