Gebhardt BJ, et al. – The impact of changes to a clinical pathway (CP) guiding post–operative RT in women with +SLNs on practice patterns throughout a network, was appraised. In this study, CP's translated published data and institutional experience into management plans. This promoted evidence–based care and eliminated unnecessary practice variations. The CP was modified based on the latest evidence for RNI, in view of the heterogeneity of post–operative RT treatment volumes. Furthermore, increased compliance and consistency with quality guidelines were observed.