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 According to national statistics (SEER) the 5 year relative survival is 86% (all), 96% (local) 78% (regional) and 21% (distant) .

The TNM stage system is considered more accurate, national survival by TNM is noted below from the  NCDB (note that the NCDB now uses 'observed' survival...in the past they reported 'relative' survival which adjusts for other causes of death. The most accurate survival predictor is the calculator here.

 

2001-2002 NCDB Survival Stats in 211,645 cases
Stage 5 Year Observed Survival
0 92.7%
I 87.8%
IIa 81.4%
IIb 74.0%
IIIa 66.7%
IIIb 41.0%
IIIc 49.3%
IV 14.8%

Relative (adjusted) Survival from NCDB
as reported in Cancer 1998;83:1262
Stage 5 Year Survival 10 Year Survival
0 99% 95%
I 97% 88%
II 83% 66%
III 54% 36%
IV 16% 7%

setstats 1 breast_ncdb_relative_survival_curve.gif (11512 bytes)