case_images: PMC7749955_01
case_images: 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.
case_images: SNI-11-405-g002.jpg
case_images: PMC7749955_01_SNI-11-405-g002.jpg
case_images: F2
case_images: 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].
case_images: 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.
case_images: SNI-11-405-g003.jpg
case_images: PMC7749955_01_SNI-11-405-g003.jpg
case_images: F3
case_images: 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].
case_images: Peroperative photograph demonstrated a large cystic lesion after laminectomy of D11, D12, L1, and L2 (a) and en bloc removal of the cyst (b).
case_images: SNI-11-405-g004.jpg
case_images: PMC7749955_01_SNI-11-405-g004.jpg
case_images: F4
case_images: 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].