Locoregional Recurrence Following Accelerated Partial Breast Irradiation for Early-Stage Invasive Breast Cancer: Significance of Estrogen Receptor Status and Other Pathological Variables

Background Understanding risk factors for locoregional recurrence (LRR) after accelerated partial breast irradiation (APBI) can help to guide patient selection for treatment with APBI. Published findings to date have not been consistent. More data are needed as these risk factors continue to be defined.