Osteosarcoma in Adult
C41.9 – Malignant neoplasm of bone and articular cartilage, unspecified
21708004 – Osteosarcoma
Upon initial radiography, the lesion of osteosarcoma can still be similar to other primary bone cancers (eg, Ewing sarcoma), metastatic disease from other primary neoplasms, and noncancerous conditions such as benign tumors, osteomyelitis, or histiocytosis.
Also consider brown tumor, giant cell reparative granuloma, chondroblastoma, giant cell tumor of bone.