Benchmarks for Cancer

Benchmarks for Cancers for Diagnostic Mammography Exams

from 2007 - 2013

by Indication for Exam*


Cancer Diagnosis Rate

  Work-Up of Abnormal Screening Examination Short-Interval Follow-Up Evaluation of Breast Problem / No Lump or Lump Unknown Evaluation of Breast Problem / Palpable Lump All Diagnostic Examinations
Cancer diagnosis rate (per 1000) 45 9.8 23.7 63.3 34.2
Readers with 100+ examinations 157 116 98 87 249
Cancers 5,655 459 1,639 1,909 13,555
All examinations 125,610 46,639 69,153 30,157 396,263
CDR(Median-50th percentile) 45.2 9.5 25.2 69.3 34.4
CDR(25th, 75th percentiles) 30.3, 63.2 6, 14.6 14.9, 37.6 51.7, 92.7 26.2, 44.7
CDR(10th, 90th percentiles) 20.9, 74.2 0, 19.3 8.4, 53.3 29.3, 113 18, 57.5
Smoothed Plots ofCancer Diagnosis Rates Frequency Distributions by indication for exam*
 for 396,263 Diagnostic Mammography Exams (Among Radiologists with 100+ Exams), 2007 - 2013

       

          


Invasive Cancer Size

  Work-Up of Abnormal Screening Examination Short-Interval Follow-Up Evaluation of Breast Problem / No Lump or Lump Unknown Evaluation of Breast Problem / Palpable Lump All Diagnostic Examinations
Invasive cancer size
Readers with 10+ invasive cancers (known size) 107 1 39 66 182
Cancers 3,505 11 1,026 1,572 9,490
Mean tumor size in mm (Median - 50th percentile) 15.7 --- 25.4 26.6 20.4
Mean tumor size in mm (25th, 75th percentiles) 14.1, 18.3 --- 20.0, 32.4 24.4, 31.8 18.7, 24.4
Mean tumor size in mm (10th and 90th percentile) 12.4, 20.4 --- 18.9, 35.1 22.2, 35.8 16.9, 28.1
Median tumor size in mm (Median - 50th percentile) 13 --- 20.5 22 16
Median tumor size in mm (25th, 75th percentiles) 11, 15 --- 16, 25 19, 26.5 15, 19
Median tumor size in mm (10th, 90th percentiles) 10, 16.5 --- 13.5, 29 18.5, 30 12.5, 22
Smoothed Plots of Invasive Cancer Size Frequency Distributions BY INDICATION FOR EXAM*
for 9,490 Invasive Cancers of Known Size That Were Identified at Diagnostic Mammography (Among Radiologists Finding 10+ Invasive Cancers of Known Size),
2007 - 2013

        

Insufficient sample size to compute meaningful percentiles IN Short-Interval Follow-up GRoup

 

 

 

 

 

     


Minimal Cancer Percentage

  Work-Up of Abnormal Screening Examination Short-Interval Follow-Up Evaluation of Breast Problem / No Lump or Lump Unknown Evaluation of Breast Problem / Palpable Lump All Diagnostic Examinations
%Minimal cancer 55.4 69.7 31.4 16.3 42.1
Readers with 10+ cancers (DCIS/ invasive size known) 115 9 40 67 194
Minimal cancers 2,696 83 375 272 4,996
Total cancers (DCIS/invasive size known) 4,864 119 1,193 1,664 11,875
%Minimal cancer (Median - 50th percentile) 52.9 --- 24.6 15.7 40
%Minimal cancer (25th, 75th percentiles) 44.4, 63.5 --- 14.8, 41.4 7.7, 20.0 32.7, 47.5
%Minimal cancer (10th, 90th percentiles) 36.4, 68.4 --- 9.4, 49.7 0, 27.3 24.7, 54.2
Smoothed Plots of Minimal Cancer Percentage Frequency Distributions BY INDICATION FOR EXAM*
for 11,875 DCIS and Invasive Cancers of Known Size That Were Identified at Diagnostic Mammography (Among Radiologists Finding 10+ DCIS and Invasive Cancers of Known Size), 2007 - 2013

       

Insufficient sample size to compute meaningful percentiles IN Short-Interval Follow-up GRoup

 

 

 

 

 

      


Node Negative Percentage

  Work-Up of Abnormal Screening Examination Short-Interval Follow-Up** Evaluation of Breast Problem / No Lump or Lump Unknown Evaluation of Breast Problem / Palpable Lump All Diagnostic Examinations†
%Node negative (invasive cancers only) 79.4 81.8 62.8 59.1 69.7
Readers with 10+ invasive cancers (known nodal status) 106 1 38 65 181
Node negative invasive cancers 2,795 9 637 935 6,651
Total invasive cancers (known nodal status) 3,518 11 1,014 1,581 9,543
%Node negative cancer (Median - 50th percentile) 81.5 --- 64.8 57.7 69.6
%Node negative cancer (25th, 75th percentiles) 76.0, 86.2 --- 50.0, 73.7 50.0, 66.7 62.2, 76.2
%Node negative cancer (10th, 90th percentiles) 68.0, 93.8 --- 41.2, 80.0 42.3, 73.3 56.7, 81.8
Smoothed Plots of Node-Negative Percentage Frequency Distributions by Indication for Exam
for 9,543 Invasive Cancers That Were Identified at Diagnostic Mammography (Among Radiologists Finding 10+ Invasive Cancers of Known Nodal Status), 2007 - 2013

     

Insufficient sample size to compute meaningful percentiles IN Short-Interval Follow-up GRoup

 

 

 

 

 

     


Stage 0 or I Percentage

  Work-Up of Abnormal Screening Examination Short-Interval Follow-Up** Evaluation of Breast Problem / No Lump or Lump Unknown Evaluation of Breast Problem / Palpable Lump All Diagnostic Examinations
%Stage 0 or I 77.1 85.4 51.2 38 63.6
Readers with 10+ cancers (known stage) 117 11 41 66 194
Stage 0 or I cancers 4,079 135 662 645 8,089
Total cancers (known stage) 5,288 158 1,293 1,698 12,726
%Stage 0 or I cancer (Median - 50th percentile) 78 --- 50 34.9 62.1
%Stage 0 or I cancer (25th, 75th percentiles) 68.8, 83.3 --- 32.6, 57.1 25.0, 45.5 55.3, 70.0
%Stage 0 or I cancer (10th, 90th percentiles) 60.9, 90.5 --- 20.0, 71.4 18.2, 50.0 45.8, 76.2
Smoothed Plots of Stage 0 or I Percentage Frequency Distributions
For 12,726 Cancers of Known Stage That Were Identified at Diagnostic Mammography (Among Radiologists Finding 10+ Cancers of Known Stage), 2007 - 2013 

     

Insufficient sample size to compute meaningful percentiles IN Short-Interval Follow-up GRoup

 

 

 

 

 

       


Footnotes:
Numbers are frequencies unless otherwise indicated.
* Includes examinations for radiologists with minimum numbers of cases in a given column as designated; excludes examinations for which the radiologist is unknown.
** Insufficient sample size to compute meaningful percentiles.
The number of radiologists in this column does not equal the sum of radiologists in the other columns. A given radiologist may contribute to each of the preceding columns, but may contribute to this column only once.
Minimal cancer = DCIS or invasive cancer 1-10 mm.
+  For figures, An overlaid solid line indicates the 50th percentile (median), paired dashed lines indicate the 25th and 75th percentiles, and paired dotted lines indicate the 10th and 90th percentiles. A single dashed line below the median indicates the 10th and 25th percentiles are the same and a single dashed line above the median indicates the 75th and 90th percentiles are the same.
Table & Figures last updated Mar 26, 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/."