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T1-hypointense lesion with irregular margins outgrowing the dorsal border of the 2nd lumbar vertebral body.
T2-weighted MRI in the same plane as Fig. 1. Heterogeneous signal, mostly isointense to the vertebral body. Invasion of the spinal canal.
Transverse T1-weighted MRI shows invasion of the epidural space.
T2-weighted image corresponding to Fig. 3. There is some displacement of the cauda roots on the right.