BCSC
Breast Cancer Surveillance Consortium: Working together to advance breast cancer research
 
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Cancers for 2,061,691 Screening Mammography Examinations from 2004 - 2008 -- based on BCSC data through 2009

You are viewing the 2009 collection of this data. Data from other times are also available:
  All Screening Examinations
All Cancers* 8,774
Cancer detection rate (per 1000) 4.3
Cancer histology
DCIS 2,185 (24.9)
All invasive 6,589 (75.1)
Invasive cancer size
Invasive, 1-5 mm 683 (10.8)
Invasive, 6-10 mm 1,605 (25.4)
Invasive, 11-15 mm 1,644 (26.0)
Invasive, 16-20 mm 898 (14.2)
Invasive, >20 mm 1,497 (23.7)
Invasive, size unknown 262
Invasive, mean size (mm) 17.8
Invasive, median size (mm) 14
Minimal cancer§ 4,473 (52.5)
Axillary lymph node status (invasive cancers)||
Node negative 4,906 (76.2)
Node positive 1,536 (23.8)
Nodal status unknown 147
Cancer stage#
Stage 0 2,185 (26.2)
Stage I 3,964 (47.5)
Stage II 1,799 (21.6)
Stage III 310 (3.7)
Stage IV 79 (0.9)
Stage unknown 437

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 Sept 26, 2013 . The following source must be cited when reproducing this table: NCI-funded Breast Cancer Surveillance Consortium (HHSN261201100031C). Downloaded xx/xx/xxxx from the Breast Cancer Surveillance Consortium Web site - http://breastscreening.cancer.gov/statistics/benchmarks/screening/2009/table4.html .

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