History of lytic lesion in the left iliac bone seen on recent CT. We see no discrete lesion on this study corresponding to the lucency in the left iliac bone seen on recent CT scan. The lucency seen on CT probably represents an area of fatty marrow of no clinical significance. There is an ovoid focus of low signal intensity within the right femoral neck representing a benign bone island. Otherwise bone marrow signal is within normal limits. We see no abnormal enhancement in the left hip. Please note that this study is not protocoled for evaluation of acetabular labrum, but we see no gross labral abnormality. No joint effusion is present. The sacroiliac joints are within normal limits. The visualized musculature is within normal limits. A small amount of pelvic free fluid is present which may be physiologic.
No discrete lesions seen on this study. Lucent lesion seen on prior CT likely represents a benign focus of relatively fatty marrow.