What are the symptoms of osteosarcoma?

Pain & swelling: Osteosarcomas usually occur in long bones, more common in young people and present as pain in the affected bone, with swelling if bone is superficial. Sometimes the symptoms follow an apparent injury to the bone.

Pain, swelling, fx: The initial symptoms are often nonspecific but generally include intermittent bone/ joint pain that involves primarily one area and that becomes more persistent over time as well as development of a mass/ swelling in the area around the tumor. Occassionally patients will present with a fracture throught the tumor.