PMC7749955_01
MRI of the dorsolumbar region sagittal section, T1WI (a) and T2WI (b), demonstrates a large intradural extramedullary cystic lesion with multiple internal septations, having significant compression over spinal cord, conus medullaries, and cauda equine. MR myelogram (c) showing variable extension into bilateral neural foramen.
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F2
T1 and hyperintense on T2WI studies and contained internal septations. The lesion significantly compressed the spinal cord, conus, and cauda equina [Figures 2a-c and 3a and b].
MRI of the dorsolumbar spine, axial section T1WI (a) and T2WI (b), demonstrates that intensity is similar to that of CSF which is isointense in T1WI and hyperintense in T2WI.
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F3
T1 and hyperintense on T2WI studies and contained internal septations. The lesion significantly compressed the spinal cord, conus, and cauda equina [Figures 2a-c and 3a and b].
Peroperative photograph demonstrated a large cystic lesion after laminectomy of D11, D12, L1, and L2 (a) and en bloc removal of the cyst (b).
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F4
Once the large extradural spinal arachnoid cyst was exposed, a plane was easily developed between the cyst and thecal sac allowing for complete en bloc cyst removal [Figure 4a and b].