Screening Mammography Cancers

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 grants from the National Cancer Institute (P01CA154292, U54CA163303), Patient-Centered Outcomes Research Institute (PCS-1504-30370), and Agency for Health Research and Quality (R01 HS018366-01A1). Downloaded xx/xx/xxxx from the Breast Cancer Surveillance Consortium Web site - http://www.bcsc-research.org/. More information regarding the BCSC is available at: http://bcsc-research.org/."