Table 1 Histological characteristics.
Abbr | Year of diagnosis | Total (%) | ||
|---|---|---|---|---|
1955 - 92 | 1993 - 99 | |||
Histological type a | ||||
1. Ductal (8500)b,c | Duct | 9406 (75.6) | 8046 (77.3) | 18616 (81.4) |
2. Lobular (8520,752:0-5) | Lob | 526 ( 4.2) | 925 ( 8.9) | 1451 ( 6.3) |
3. Mucinous (8480,8481) | Muc | 146 ( 1.2) | 202 ( 1.9) | 348 ( 1.5) |
4. Tubular (8211) | Tub | 87 ( 0.7) | 170 ( 1.6) | 257 ( 1.1) |
5. Medullary (8510,8512,7591) | Med | 170 ( 1.4) | 81 ( 0.8) | 251 ( 1.1) |
6. Other specified types | Other | 58 ( 0.5) | 208 ( 2.0) | 266 ( 1.2) |
7. Adenocarinomas/carcinomas, unspec. (8140, 8010, 8020)d | Unsp | 641 ( 5.1) | 609 ( 6.2) | 1250 ( 5.5) |
8. Paget disease, malign (854:0-3,752:6:8) | Paget | 188 ( 1.5) | 144 ( 1.4) | 332 ( 1.5) |
9. Sarcomas (9020,8800-8930,9120)e | Sarc | 70 ( 0.2) | 26 ( 0.3) | 96 ( 0.4) |
Histological grade | ||||
Well/moderate (grade 1-2) | 804 ( 6.5) | 5256 (50.5) | 6060 (26.5) | |
Poorly/undiff. (grade 3-4) | 1104 ( 8.9) | 2379 (22.9) | 3484 (15.2) | |
Unknown/missing | 10548 (84.7) | 2776 (26.7) | 13323 (58.3) | |