Table 1.
The distribution of patients with newly diagnosed breast cancer and previous MPMs according to pathology reports from Sahlgrenska University Hospital (2007–2018)
| No. of patients (%) | ||
|---|---|---|
| Patients with newly diagnosed breast cancer (2007–2018) (n = 8031) |
Breast cancer patients with other previously diagnosed primary malignancies (2007–2018) (n = 414) |
|
| 2007 | 545 (89% invasive, 11% in situ) | 18 (3.3%) |
| 2008 | 657 (86% invasive, 14% in situ) | 17 (2.6%) |
| 2009 | 521 (83% invasive, 17% in situ) | 21 (4.0%) |
| 2010 | 688 (84% invasive, 16% in situ) | 32 (4.7%) |
| 2011 | 678 (88% invasive, 12% in situ) | 29 (4.3%) |
| 2012 | 634 (88% invasive, 12% in situ) | 29 (4.6%) |
| 2013 | 731 (86% invasive, 14% in situ) | 27 (3.7%) |
| 2014 | 800 (85% invasive, 15% in situ) | 54 (6.8%) |
| 2015 | 745 (86% invasive, 14% in situ) | 49 (6.6%) |
| 2016 | 718 (87% invasive, 13% in situ) | 59 (8.2%) |
| 2017 | 725 (87% invasive, 13% in situ) | 40 (5.5%) |
| 2018 | 589 (83% invasive, 17% in situ) | 39 (6.6%) |
p value < 0.001 (p value for trend over time, tested by Poisson regression for counts and by linear regression with rates/fractions as outcome, p value < 0.001 in both cases)