 Cervical MRI:Redemonstrated are postoperative changes of suboccipital craniotomy for Chiari decompression. CSF flow analysis demonstrates a minimal flash of biphasic CSF flow posteriorly at the level of the foramen magnum and cerebellar peduncular tips.The osseous alignment is anatomic. There are no fractures or subluxations. The marrow signal is benign. The visualized paraspinal contents are unremarkable. There is no spinal canal or neural foraminal compromise.Thoracic MRI:There is a smooth, physiologic thoracic kyphotic curve. There is mild anterior wedge deformity of T7 and T8 which is chronic in appearance. The remaining vertebral body heights are maintained. Marrow signal intensity is benign throughout. The thoracic cord is normal in signal and morphology. The conus appears to terminate at L2.T1/2 demonstrates no significant disc bulge or cord encroachment.T2/3 demonstrates a small left paramedian disc protrusion which causes anterior left hemicord flattening without intrinsic cord signal abnormality or central stenosis. T3/4 demonstrates no significant disc bulge or cord encroachment. T4/5 demonstrates no significant disc bulge or cord encroachment. T5/6 demonstrates no significant disc bulge or cord encroachment.T6/7 demonstrates no significant disc bulge or cord encroachment. T7/8 demonstrates no significant disc bulge or cord encroachment. T8/9 demonstrates no significant disc bulge or cord encroachment. T9/10 demonstrates no significant disc bulge or cord encroachment.T10/11 demonstrates no significant disc bulge or cord encroachment. T11/12 demonstrates no significant disc bulge or cord encroachment. T12/L1 demonstrates no significant disc bulge or cord encroachment.
1.Redemonstrated are postoperative changes of suboccipital craniotomy for Chiari decompression. CSF flow analysis demonstrates a minimal flash of biphasic CSF flow posteriorly at the level of the foramen magnum and cerebellar peduncular tips.2.No MRI evidence of syrinx.3.T2/3 demonstrates a small left paramedian disc protrusion which causes anterior left hemicord flattening without intrinsic cord signal abnormality or central stenosis.