CT
Axial non-contrast
Axial bone window
Sagittal non-contrast
Sagittal bone window
Homogeneous lytic lesion isodense to muscle in the T12 vertebral body measuring 30 x 29 x 20 mm (laterolateral x AP x CC) with thickening of the surrounding trabeculae (mini brain sign). The lesion breaches the posterior wall of the vertebral body and bulges into the spinal canal at its left paramedian aspect, narrowing the lateral recess and displacing the thecal sac to the right. Both upper and lower T12 endplates are fractured where they border on the lesion. Radiographic appearance suggestive of solitary bone plasmacytoma.
Lumbosacral transitional vertebra (LSTV) - lumbarization of S1.