| Study | Place | Year | Number of patients | 5 year OS, percent |
| Ashikari, R; 1976 | Memorial Hospital, NYC | 1946-75 | 42 | 79 |
| Campana, F; 1989 | Institute Curie | 1960-85 | 31 | 76 |
| Baron, P; 1990 | MSKCC | 1975-88 | 35 | 75 |
| Ellerbroek, N; 1990 | MD Anderson | 1944-87 | 42 | 72 |
| Rosen, P; 1990 | MSKCC | 1966-85 | 48 | 60 |
| Kyokane, T; 1995 | Japan | NR | 97 | 59 |
| Foroudi, F; 2000 | Australia | 1979-96 | 20 | 93 (mastectomy or XRT) |
| 41 (no local treatment) | ||||
| Matsuoka, K; 2003 | Japan | 1985-98 | 11 | 63 |
| Blanchard, D; 2004 | Mayo | 1975-98 | 35 | 73 (mastectomy) |
| 36 (no mastectomy) |
