Cancers for 1,682,504 Screening Mammography Examinations from 2007 - 2013
Based on BCSC data through 2013
| Number of Screening Exams (%) | |
| All Cancers* | 8,529 |
| Cancer detection rate (per 1000) | 5.1 |
| Cancer histology† | |
| DCIS | 2,644 (31.0) |
| Invasive | 5,885 (69.0) |
| Invasive cancer size‡ | |
| Invasive, 1-5 mm | 727 (12.7) |
| Invasive, 6-10 mm | 1,461 (25.6) |
| Invasive, 11-15 mm | 1,459 (25.5) |
| Invasive, 16-20 mm | 840 (14.7) |
| Invasive, >20 mm | 1,228 (21.5) |
| Invasive, size unknown | 170 |
| Invasive, mean size (mm) | 15.9 |
| Invasive, median size (mm) | 13 |
| Minimal cancer§ | 4,816 (57.7) |
| Axillary lymph node status (invasive cancers)|| | |
| Node negative | 4,599 (79.4) |
| Node positive | 1,190 (20.6) |
| Nodal status unknown | 96 |
| Cancer stage# | |
| Stage 0 | 2,644 (31.6) |
| Stage I | 3,784 (45.3) |
| Stage II | 1,585 (19.0) |
| Stage III | 289 (3.5) |
| Stage IV | 52 (0.6) |
| Stage unknown | 175 |
Notes:
Numbers are frequencies unless otherwise indicated.
Screening Mammography Examinations: mammography examinations indicated by the radiologist to be for screening, with bilateral routine views
done and no other mammogram within the last 9 months, among women without breast implants.
* Cancers = The number of cancers diagnosed within 1 year following an examination with an abnormal initial interpretation
(BI-RADS 0, 4, or 5; Note: 3 with a recommendation for immediate follow-up was recoded as 0).
† Numbers in parentheses are percentages of all cancers.
‡ Numbers in parentheses are percentages of invasive cancers of known size.
§ Minimal cancer = DCIS or invasive cancer 1-10 mm; numbers in parentheses are percentages of DCIS + invasive cancer of known size.
|| Numbers in parentheses are percentages of invasive cancers of known nodal status.
# Numbers in parentheses are percentages of DCIS + invasive cancers of known stage.
Table numbers last updated March 23, 2017 .
The following must be cited when reproducing this data:
"The Breast Cancer Surveillance Consortium and its data collection and sharing activities are funded by the National Cancer Institute (P01CA154292). Downloaded xx/xx/xxxx from the Breast Cancer Surveillance Consortium Web site - http://www.bcsc-research.org/."