Table 1 Characteristics at diagnosis of BCIS (breast carcinoma in situ)a
From: Increased risk of second malignancies after in situ breast carcinoma in a population-based registry
Subsequent cancer | |||
|---|---|---|---|
No. (%) | Yes (%) | Total (%) | |
Age at BCIS diagnosis | |||
⩽49 years | 288 (26) | 30 (27) | 318 (26) |
⩾50 years | 822 (74) | 83 (73) | 905 (74) |
Initial treatment | |||
No radiotherapy | 765 (69) | 68 (60) | 833 (68) |
With radiotherapy | 345 (31) | 45 (40) | 390 (32) |
Follow-up | |||
1–4 years | 549 (49) | 64 (57) | 613 (50) |
5–9 years | 396 (36) | 34 (30) | 430 (35) |
⩾10 years | 165 (15) | 15 (13) | 180 (15) |
Subtype of initial cancer | |||
DCISb | 1052 (95) | 105 (93) | 1157 (95) |
LCISc | 58 (5) | 8 (7) | 66 (5) |
Time of diagnosis d | |||
1972–1992 | 165 (15) | 41 (36) | 206 (17) |
1993–2002 | 945 (85) | 72 (64) | 1017 (83) |
Total | 1110 | 113 | 1223 (100) |
