Radiotherapy was less used in elderly patients receiving mastectomy but there was an increasing trend (4.58% in 1988–2000, 7.49% in 2001–2010, and 10.79% in 2011–2017), especially in patients with T3 or N1 breast cancer (Supplementary Material, Table 1) Survival analyses The median length of follow-up was 76 months for the radiation group, and 70 months for the no radiation group ( p < 0.001).
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Adjuvant radiation therapy for older women with early-stage breast cancer: a propensity-matched SEER analysis.
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