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Figure 1

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(a) Oblique sagittal reformatted view of pre-treatment CT (bone window, slice thickness 1 mm) of the iliac bone shows the extensive lesion involving the iliac wing (arrow), arcuate line (dotted arrow) and acetabulum (star). (b) Oblique axial reformatted view of pre-treatment CT (bone window, slice thickness 1 mm) of the pelvic bones shows the extensive lesion involving both the iliac bone and the sacral wing (arrowhead). (c) 3D oblique posterior reformatted view of the pelvic bones shows the extensive osteolytic lesion involving the iliac wing (arrow) and the sacral wing (arrowhead) greatly compromising pelvis stability.