Fig. 3

Magnetic resonance imaging and computed tomography of the thoracolumbar spine of case no. 13, which does not clearly display spinal cord compression. Top row left to right; sagittal T2-weighted image of the thoracolumbar spine, transverse T2-weighted image at the level of the spinal cord lesion at T11–12 (corresponding to dashed line labelled 1). Bottom row left to right; transverse computed tomography slice at affected level T11–12 (corresponding to dashed line labelled 1) displaying concurrent bilateral caudal articular process dysplasia (left-sided hypoplasia, arrowed, right-sided aplasia, arrow-head), transverse computed tomography slice at unaffected level T12–13 (corresponding to dashed line labelled 2) displaying unilateral (right-sided; arrow-head) caudal articular process aplasia