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Table 3 Impact of the number of negative lymph nodes on locoregional recurrence-free survival in patients with and without postmastectomy radiotherapy

From: Number of negative lymph nodes can predict survival of breast cancer patients with four or more positive lymph nodes after postmastectomy radiotherapy

Survival endpoint 0-12 NLNs (%) 13-39 NLNs (%)
Without PMRT With PMRT p Without PMRT With PMRT p
LRFS (8-year) 61.9 85.6 <0.001* 92.8 92.1 0.500
DMFS (8-year) 42.1 49.3 0.018* 59.9 66.2 0.204
DFS (8-year) 36.5 46.9 0.001* 57.1 42.0 0.199
OS (8-year) 49.1 58.5 0.008* 72.3 68.2 0.653
  1. PMRT, postmastectomy radiotherapy; NLNs, negative lymph nodes; LRFS, locoregional-recurrence-free survival; DMFS, distant metastasis-free survival; DFS, disease free survival; OS, overall survival.
  2. *p < 0.05 indicates a significant difference.