Role of consolidative radiotherapy for metastatic urothelial bladder cancer patients without progression and with no more than five residual metastatic lesions following first line systemic therapy: A retrospective analysis.

454 Background: Consolidative local treatment of the primary tumor and metastases in the treatment of metastatic malignancies has shown promising results in several types of primary tumors. The aim of this study is to assess consolidative radiotherapy to the bladder and to residual metastases among metastatic urothelial bladder cancer with no progression following first line systemic therapy, hypothesizing an increase in overall survival and in...