%0 Journal Article %T Incorporating Risk Factors to Identify the Indication of Post-mastectomy Radiotherapy in N1 Breast Cancer Treated with Optimal Systemic Therapy: A Multicenter Analysis in Korea (KROG 14-23) %A Bae Kwon Jeong %A Hae Jin Park %A Hyun Soo Shin %A Ja Young Kim %A Jin Hee Kim %A Jin Ho Kim %A Kyubo Kim %A Kyung Hwan Shin %A Kyung Ran Park %A Seung Do Ahn %A Sun Young Lee %A Suzy Kim %A Won Park %A Yeon-joo Kim %A Yong Bae Kim %J Archive of "Cancer Research and Treatment : Official Journal of Korean Cancer Association". %D 2017 %R 10.4143/crt.2016.405 %X In a recent meta-analysis, post-mastectomy radiotherapy (PMRT) reduced any first recurrence (AFR) and improved survival in N1 and N2 patients. We investigated risk factors for AFR in N1 after optimal systemic therapy without PMRT, to define a subgroup of patients who may benefit from PMRT %K Breast neoplasms %K Post-mastectomy radiotherapy %K Risk factors %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5512365/