Fig. 4From: Delayed postoperative radiotherapy increases the incidence of radiographic local tumor progression before radiotherapy and leads to poor prognosis in spinal metastasesLocal control and overall survival after radiotherapy in the two groups. Estimated rates of LC (a) and OS (b). LC, local control; NPBR, no progression before radiotherapy group; OS, overall survival; PBR, progression before radiotherapy groupBack to article page