Table 1.
Number of morphology-specific breast cancers in the Swedish Family Cancer Database during the period 1993–1998
| 1st invasive | 2nd invasive | In situ | ||||
| Morphology | n | % | n | % | n | % |
| Ductal | 14,187 | 66.2 | 1679 | 60.9 | 1834 | 69.9 |
| Lobular | 2936 | 13.7 | 531 | 19.2 | 324 | 12.4 |
| Tubuloductal/tubular | 1915 | 8.9 | 232 | 8.4 | 2 | 0.1 |
| Comedo | 1190 | 5.6 | 133 | 4.8 | 397 | 15.1 |
| Mucinous | 608 | 2.8 | 87 | 3.2 | 0 | 0.0 |
| Medullary | 340 | 1.6 | 29 | 1.1 | 0 | 0.0 |
| Papillary | 117 | 0.5 | 24 | 0.9 | 55 | 2.1 |
| Morbus Paget | 100 | 0.5 | 43 | 1.6 | 11 | 0.4 |
| Cystosarcoma phyllodes | 47 | 0.2 | 1 | 0.0 | 0 | 0.0 |
| Other | 4290 | 635 | 367 | |||
| All | 25,730 | 3394 | 2990 | |||
Percentages are for all cancers apart from those in the 'Other' category (undefined morphological types). Thus, for first primary the percentages provided are from a total of 21,440 cancers, for second primary they are from a total of 2759 cancers, and they are from a total of 2623 for in situ cancers.