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The proximal right femur shows a diffusely abnormal irregular trabecular pattern with areas of increased and decreased osseous density and ground-glass opacity. This lesion causes moderate cortical thinning with endosteal irregularity. There is no associated periosteal reaction or definitive soft-tissue mass. The proximal epiphysis of the right femur is spared. Similar lesions are present within the right ilium in the supra-acetabular region and along the iliac crest. The right femoral neck demonstrates a focally expansile lytic lesion with severe cortical thinning which appears to be a distinct lesion from the changes described previously. The cortex along the inferior margin of the right femur is not definitively intact, and may represent an area of cortical disruption indicating a pathologic fracture.