 Note that examination is limited by metal artifact from anterior fusion hardware. Postsurgical changes are noted from anterior fusion of the C4-C6 vertebral bodies. A known left cerebellopontine angle mass is again noted on sagittal images and measures 15 mm in AP dimension, unchanged. A 12 mm midline nasopharyngeal cyst is unchanged and likely presents a Thornwaldt cyst. There is uniform narrowing of the cervical spinal canal, measuring approximately 8 mm in diameter, compatible with congenital narrowing. The cervical and upper thoracic cord is normal in signal without abnormal enhancement. The cervicomedullary junction is normal. The cerebellar tonsils are in normal position. C1/2: No significant spinal canal or neuroforaminal narrowing.C2/3: Mild spinal canal narrowing. No significant neuroforaminal narrowing.C3/4: Mild spinal canal narrowing. Mild left neural foraminal narrowing.C4/5: Mild spinal canal narrowing. No significant neuroforaminal narrowing.C5/6: Mild spinal canal narrowing. No significant neuroforaminal narrowing.C6/7: Mild spinal canal narrowing. No significant neuroforaminal narrowing.C7/T1: There is central and leftward disc extrusion with mild superior displacement. This causes complete effacement of the thecal sac and flattening of the spinal cord, compatible with moderate spinal stenosis. There is no signal abnormality at this level within the cord. The visualized thoracic spine up to the level of T4 does not have significant spinal canal narrowing.
1.Congenital narrowing of the cervical spinal canal with moderate spinal canal narrowing at the C7-T1 level secondary to disc extrusion. Please see above comments.2.Postsurgical changes from anterior fusion of C4-C6 without evidence of spinal cord signal abnormality.