Figure 8. (a) X-ray of the pelvis showing a large osteolytic lesion with sclerotic margins in the right iliac bone, abutting the right sacroiliac joint. A posterior abdomen and pelvis scan with 154 MBq I-131 shows no focal concentration. (b) ⁹⁹Tc^m MDP bone scan of the patient revealing an osteolytic lesion in the right ilium and sacroiliac joint with an increased uptake on the left side (probably representing the sclerotic margin) and the right mandible. (Continued) (c) The ⁹⁹Tc^m(V)DMSA whole body scan of the same patient showing increased concentration of tracer at the osteolytic lesion as well as the mandibular lesion.