Fig. 3

Lumbar MRI performed 2.5 years after the initial diagnosis. The sagittal T2WI (J) and the STIR-WI (K) demonstrate increased areas of hyperintensity in the L2 and L3 vertebral bodies and endplates, indicating progression of the oedema (black arrows). The sagittal T1WI (L) depict the same irregularities and lesions with marked hypointensity of L2–L3 vertebral body endplates (white arrows). The axial T2WI (M) show the progression of the enlarged paravertebral surrounding soft tissues, suggestive of inflammation (double arrows)