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©2013 UpToDate ® Print Email Breast cancer specific survival according to stage at diagnosis and lymph node status; SEER database, 1988-2000 Cancer specific survival, percent Stage of disease I IIA IIB IIIA IIIB Number of lymph nodes examined 0 92 82 71 58 49 1 to 3 98 93 81 72 65 4 to 6 96 91 80 75 71 7 to 9 96 90 81 75 71 10 to 14 96 90 82 71 72 15 to 19 96 89 80 71 69 20+ 95 88 78 68 67 Ratio of positive to total number of lymph nodes 0.01 to 0.25 - 92 85 81 78 0.26 to 0.5 - 85 78 73 76 0.51 to 0.75 - 77 71 67 63 0.76 to 1.00 - 72 61 55 50 SEER: Surveillance, Epidemiology, and End Results Database of the National Cancer Institute. Data from: Joslyn SA, et al. Breast Cancer Res Treat 2005; 91:11.