Image quality is markedly degraded by motion artifact as well as artefact arising from the right femoral DHS.
Aggressive tumour replaces the right inferior and superior pubic rami. Extensive infiltration of the right hemipelvis with regions of appreciable contrast enhancement in the right acetabulum, iliac wing and right posterior superior iliac spine abutting the sacroiliac joint. There is a large soft tissue mass encasing the right superior pubic ramus and pubic body and extending into the right lateral pelvic wall medial to the acetabulum.
Conclusion
Artifact degraded study demonstrates large ossifying expansile tumour of the right pubic bone, with satellite lesions in the ilium and ischium, consistent with osteosarcoma. Sacrum and left pelvic bone appears clear.