Prognostic factors and outcomes of osseous chondrosarcoma after surgery: the 2004–2014 Surveillance, Epidemiology, and End Results database study

Chondrosarcoma is a slow-growing malignant tumor comprised of transformed cells producing a cartilaginous matrix (1,2), it occurs common at skeletal system, and also could be at extraskeletal sites (3,4). The prognostic factors that affect the survival outcomes were inconsistent in previous studies (5-9) and still lack the data of patients with osseous chondrosarcoma after surgery