Abstract
To analyze the impact of adjuvant radiotherapy (RT) on ipsilateral breast recurrence (IBR) and overall survival (OS) in patients older than 69 years with early-stage breast cancer. From January 2007 to June 2015, we analyzed retrospectively 137 women with estrogen receptor-positive T1-2 invasive breast cancer, with negative axillary lymph nodes, dividing them into 2 subgroups: 70 to 79 years and older than 79 years. After a median follow-up of 43.2 months, the 3-year IBR-free survival in patients treated with surgery plus RT was 98.8% and 92.1% in patients treated with surgery alone, with a significant difference (p = .01). Radiotherapy did not impact overall survival (p = .10). A higher percentage of patients aged between 70 and 79 years received RT after conservative surgery if compared with the older subgroup (p < .01). In elderly women, adjuvant RT reduced the IBR, but did not improve OS.
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