Fig. 6

Preoperative and postoperative MR images of the illustrative case #2. a, b Sagittal and axial preoperative T1-weighted gadolinium-enhanced MR images revealed that a posteriorly located intradural extramedullary tumor at level of T11-T12. c, d Sagittal and axial preoperative T1-weighted gadolinium-enhanced MR images displayed that the tumor was fully removed. e, f Axial CT and three-dimensional CT presented the integrity of the facet joints with no spine malformation