Painful sternal swelling
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Expansile, lytic, enhancing soft tissue mass seen destroying the entire sternum with intrathoracic extent, involvement of costochondral cartilages and seen to extent up to the skin.
Sternal osteosarcoma is a relatively rare entity. It is seen most often in elderly patients. It is seen to occur as secondary lesions in patients with previous radiation therapy ; however that was not the case in ours. Patient usually presents as a painful mass. The survival rate is about 15%.
Radiographically, sternal osteosarcoma appears as a masslike lesion that consists of bone and soft tissue and contains areas of osteolytic change, calcification, and osteoid matrix .