OC-0159: Disseminated tumor cells as factor of benefit of regional lymph nodes irradiation in breast cancer. (April 2018) - Mignot, F.; Bidard, F.C.; Dureau, S.; Fourquet, A.; Berger, F.; Loirat, D.; Proudhon, C.; Vincent-Salomon, A.; Pierga, J.Y.; Kirova, Y.