Can osteocarcinoma spread and what is the prognosis?

Yes, osteosarcoma can spread (metastasize) to other parts of the body, most commonly to the lungs and other bones. The prognosis for osteosarcoma varies depending on factors such as the tumor's location, size, and whether it has metastasized at diagnosis. Generally, when detected early and treated aggressively with surgery and chemotherapy, the five-year survival rate can be around 60-70%. However, if the cancer has already spread at the time of diagnosis, the prognosis tends to be poorer.