There is severe uniform joint space narrowing of the left femoroacetabular joint with moderate osteophytosis. The left proximal femur, para-acetabular innominate, anterior ilium, and left sacroiliac joint show multiple, well-defined, irregularly shaped lytic lesions with mild surrounding blastic changes. None of these sites show a distinct area of cortical disruption or periosteal reaction. There is mild to moderate distension of the left capsular and psoas fat pads.