Figure 1714

Recurrent disc herniation. (A) Sagittal MRI of the lumbar spine (T1 spin echo) showing a non-enhancing mass behind the L5 vertebral body that proved to be a recurrent disc herniation. (B) Axial T1WI with IV contrast showing a large right-side non-enhancing mass displacing and compressing the dural sac posteriorly and to the left. The mass was found at surgery to be a large free discal fragment. (C) Axial T1WI with IV contrast showing a rim enhancement around a right recurrent disc herniation at L4-L5.

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