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To investigate the recurrence pattern and subsequent survival outcomes in young breast cancer population, 483 young patients (≤ 35) and 739 elderly patients (≥ 65), who received mastectomy or breast-conserving surgery from 2008 to 2012, were included in this study. The young population presented with a higher rate of pathologic tumor stage (P &lt; 0.001), positive pathologic lymph node (P &lt; 0.001), grade III tumors (P &lt; 0.001), and lymphovascular invasion (P &lt; 0.001). With a median follow-up of 56.5 months, young patients had a significantly lower 5-year disease-free survival (73.7% vs 83.4%, P = 0.001), while no difference in 5-year overall survival was observed (91.7% vs 91.7%, P = 0.721). The 5-year cumulative incidences of locoregional relapse (8.9% vs 4.3%, P = 0.009) and distant metastasis (18.8% vs 9.5%, P &lt; 0.001) were significantly higher in the young population. However, for patients with distant metastasis, the survival outcomes were significantly better in the young patients (5-year overall survival since diagnosis: 60.0% vs 47.3%, P = 0.025; 5-year overall survival after recurrence: 31.0% vs 24.3%, P = 0.001). Young breast cancer patients present with more aggressive clinicopathological features and have poor prognosis compared with elderly. But young patients with distant metastasis might have better survival outcomes.

Young breast cancer patients who develop distant metastasis after surgery have better survival outcomes compared with elderly counterparts