Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology
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A nomogram to predict for the 10-year ipsilateral breast relapse (IBR) after breast-conserving therapy (BCT) for breast cancer (BC) was developed based on the 'boost-no-boost'-trial with a concordance probability estimate (CPE) of 0.68. The aim of our study was to validate that algorithm. ⋯ The predictive model for IBR in BC is imperfect in this more recent study population.