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. 2021 Jun;7(2):244–248. doi: 10.21037/jss-20-601

Figure 2.

Figure 2

(A) Post-operative MRI lumbar spine showing dorsal spinal subdural extra-arachnoid hygroma (SSEH) at L1. The cauda equina nerve roots are pushed anteriorly. (Left: sagittal T2 of the lumbar spine MRI, Right: corresponding Axial T2 of the lumbar spine MRI at L1 level). (B) Post-operative MRI lumbar spine showing ventral spinal subdural subarachnoid hygroma (SSSH) at L2. Conglomeration of the cauda equina nerve roots seen residing centrally within the thecal sac. (Left: sagittal T2 of the lumbar spine MRI, right: corresponding axial T2 of the lumbar spine MRI at L2 level).