Female, 49 years old, with spinal cyst, follow-up examination. Cystic expansion of the dorsal CSF space is seen within the spinal canal spanning from the T4-T6 levels. The fluid in this lesion follows CSF signal on all sequences. No associated solid or enhancing tissue is demonstrated. The lesion is intradural in location and exerts mass effect upon the adjacent spinal cord causing flattening and anterior displacement of the cord. No evidence of spinal cord edema is seen. The osseous spinal canal is slightly widened to accommodate this lesion.No additional intraspinal lesions are identified. The spinal cord otherwise demonstrates normal morphology and signal characteristics. The conus terminates at the L1 level which is within normal limits.Spinal alignment is anatomic. Vertebral body height and morphology are within normal limits. No evidence of marrow replacement or marrow edema is seen. The intervertebral discs are preserved with no significant spinal canal or foraminal stenosis.
Findings are demonstrated compatible with an intradural meningeal cyst occupying the dorsal CSF space from T4 through T6. This lesion does exert mass effect upon the spinal cord which is flattened and anteriorly displaced. The lesion causes subtle widening of the osseous confines of the spinal canal which would indicate that this is a long-standing chronic process.