The patient is a cigarette smoker and is taking Percocet for the pain. There is no abdominal mass or tenderness. On the left side of the pelvis, there is a palpable mass just inside the anterior superior iliac spine that is mildly tender. There is a fullness in the hip musculature above the trochanter. There is a full range of motion of the hip but there is pain with motion. Distally, the neurovascular status is normal. Sensation is normal in the foot. Circulation is normal. Plain radiographs a vague, lytic, permeative process in the left ilium, with a vague but non-mineralized mass in the soft tissues surrouning the anterior superior iliac spine. n MRI is available for review. There is an abnormality in the left hemipelvis with a intraosseous and extra osseous mass arising from the ileum, with abnormal signal in the ileum from the anterior superior iliac spine all the way down to the supra-acetabular area at the top of the hip joint. There is a soft tissue mass both on the inside and on the outside of the pelvis, it measures at least eight or 10 cm in maximum dimension. There is diffuse abnormality in the hip abductor musculature. The hip joint does not appear to be grossly involved, but the coronal images of the acetabulum show that the lesion reaches down to the subchondral bone of the acetabulum were possibly to be cartilage of the acetabulum on the left side. No definite abnormality is seen within the femoral head or inside the joint itself. A CT scan of the pelvis shows a partially lytic and destructive mass inside and outside the pelvis with no distinctive mineralization within the soft tissue mass. The tumor appears to arise from the left ileum, just posterior and distal to the anterior superior iliac spine. On the bone scan, there is abnormality in the left hemipelvis. There is also slightly increased uptake in the left proximal femur. A CT scan of the chest shows no nodules, no lymphadenopathy, and no evidence of metastasis.