Symptoms of metastatic masses
Metastatic or secondary bone tumors come from primary tumors of prostate, thyroid, breast, lungs, kidneys, and adrenal glands. Thus, if there is a primary tumor in one of these places, the bones should be evaluated for any secondary mass. Osteochondroma and enchondroma, if left untreated, can lead to malignancy and metastasis. Chondrosarcoma very rarely metastasizes, while Ewing’s sarcoma and osteosarcoma can metastasize most commonly to the lungs and liver. Ewing’s may also metastasize to the abdomen. One-third of cases of osteoclastoma are malignant, but they rarely metastasize.