Table 1 Demographics and characteristics of 163 breast cancer patients with a second primary malignancy, n (%)
Variable | Total number (N = 163) | Latency (years) | p | |
|---|---|---|---|---|
 ≤ 5 (n = 77) |  > 5 (n = 86) | |||
Age of BC diagnosis (years) | 56.47 ± 11.62a |  |  |  |
  < 56 | 102 (62.58) | 50 (64.94) | 52 (60.47) | 0.556 |
  ≥ 56 | 61 (37.42) | 27 (35.06) | 34 (39.53) |  |
Age of SPM diagnosis (years) | 62.42 ± 11.99a |  |  | 0.418 |
  < 62 (ref) | 94 (57.67) | 63 (60.00) | 31 (53.45) |  |
  ≥ 62 | 69 (42.33) | 42 (40.00) | 27 (46.55) |  |
TNM stage of BC | Â | Â | Â | 0.123 |
  I + II | 119 (73.01) | 62 (80.52) | 57 (66.28) |  |
  III + IV | 12 (7.36) | 4 (5.19) | 8 (9.30) |  |
  Unclassified | 32 (19.63) | 11 (14.29) | 21 (24.42) |  |
TNM stage of SPM | Â | Â | Â | 0.161 |
  I + II | 59 (36.20) | 33 (42.90) | 26 (30.23) |  |
  III + IV | 36 (22.10) | 13 (16.88) | 23 (26.74) |  |
  Unclassified | 68 (41.72) | 31 (40.26) | 37 (43.02) |  |
BC therapeutic hospital grade | Â | Â | Â | Â |
  Secondary | 62 (38.04) | 30 (38.96) | 32 (37.21) | 0.818 |
  Tertiary | 101 (61.96) | 47 (61.04) | 54 (62.79) |  |
SPM therapeutic hospital grade | Â | Â | Â | Â |
  Secondary | 38 (23.31) | 16 (20.78) | 22 (25.58) | 0.469 |
  Tertiary | 125 (76.69) | 61 (79.22) | 64 (74.42) |  |
Surgery for BC | Â | Â | Â | 0.001 |
  Yes | 80 (49.07) | 47 (61.04) | 33 (38.37) |  |
  No | 58 (35.58) | 26 (33.76) | 32 (37.21) |  |
  Unknown | 25 (15.34) | 4 (5.19) | 21 (24.42) |  |
Surgery for SPM | Â | Â | Â | 0.653 |
  Yes | 43 (55.84) | 45 (52.33) | 88 (53.99) |  |
  No | 75 (46.01) | 34 (44.16) | 41 (47.67) |  |
SPM sites | Â | Â | Â | 0.004 |
  Colon and rectum | 30 (18.40) | 12 (15.58) | 18 (20.93) |  |
  Thyroid | 28 (17.18) | 22 (28.57) | 6 (6.98) |  |
  Lung and bronchus | 24 (14.72) | 9 (11.69) | 15 (17.44) |  |
  Others | 81 (49.69) | 34 (44.16) | 47 (54.65) |  |
Total number of patients | 163 (100.00) | 77 (47.24) | 86 (52.76) | Â |