Both the L1 and L2 vertebral bodies (together with their respective posterior elements) are involved, with the vertebral bodies expanded in the antero-posterior dimension and L2 a characteristic “picture frame” vertebra. There is involvement as well of the pelvis together with the sacral vertebral bodies. Coarse and thickened trabeculae are particularly evident in the iliac bones bilaterally. (Case provided courtesy of Reto Sutter, MD, Leitender Arzt, Radiologie, Uniklinik Balgrist, Zürich)

Part of the on-line supplement to Neuroradiology – The Essentials with MR and CT (© 2015)