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Benchmarks for Cancers by Indication for Examination for Diagnostic 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:
  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) 36.1 8.7 18.5 55.2 28.5
Readers with 100+ examinations 227 164 153 114 316
Cancers 4,245 531 1,658 1,981 9,342
All examinations 117,530 60,689 89,808 35,895 327,625
CDR (Median-50th percentile) 32 8.4 19.3 57.1 27.4
CDR (25th, 75th percentiles) 23.3, 42.6 4.5, 11.8 10.8, 30.7 44.2, 75.6 20.3, 37.3
CDR (10th, 90th percentiles) 15, 58.3 0, 19.1 6.3, 43.4 29.1, 91.4 12.9, 47.3
Invasive cancer size          
Readers with 5+ invasive cancers (known size) 149 13 71 125 243
Cancers 2,492 80 1,043 1,862 6,452
Mean tumor size in mm (Median - 50th percentile) 15.8 11.1 21.6 26.6 20.5
Mean tumor size in mm (25th, 75th percentiles) 13.1, 19.0 9.4, 11.8 18.6, 26.0 23.7, 31.0 17.8, 25.1
Mean tumor size in mm (10th and 90th percentile) 10.6, 23.1 7.6, 17.6 15.9, 32.1 21.5, 35.7 15.1, 29.8
Median tumor size in mm (Median - 50th percentile) 13 9.5 18 22 17
Median tumor size in mm (25th, 75th percentiles) 11, 15 7, 11 15, 21.5 19.5, 25.5 14.5, 20
Median tumor size in mm (10th, 90th percentiles) 9.5, 18 5.5, 12 13, 26 17.5, 30 12, 24
% Minimal cancer 59.7 72.3 40.6 16.9 44.6
Readers with 5+ cancers (DCIS/invasive size known) 186 35 92 134 268
Minimal cancers 2,414 196 607 349 3,942
Total cancers (DCIS/invasive size known) 4,043 271 1,495 2,070 8,847
% Minimal cancer (Median - 50th percentile) 61.1 71.4 40 13.7 44.4
% Minimal cancer (25th, 75th percentiles) 46.7, 70.6 60.0, 81.3 22.3, 56.3 4.5, 21.4 31.7, 53.1
% Minimal cancer (10th, 90th percentiles) 37.5, 81.8 40.0, 84.6 14.3, 66.7 0, 33.3 20.0, 66.7
% Node negative (invasive cancers only) 79.9 85.2 66.1 55.3 69.1
Readers with 5+ invasive cancers (known nodal status) 154 20 78 129 248
Node negative invasive cancers 2,164 98 768 1,087 4,786
Total invasive cancers (known nodal status) 2,707 115 1,161 1,964 6,925
% Node negative cancer (Median - 50th percentile) 82.2 84.5 63.4 57.1 70
% Node negative cancer (25th, 75th percentiles) 75.0, 87.2 80.0, 100 50.0, 75.8 42.9, 66.7 62.0, 80.0
% Node negative cancer (10th, 90th percentiles) 61.5, 100 66.7, 100 40.0, 85.7 35.7, 80.0 52.1, 87.5
% Stage 0 or I 79.1 87.9 59.8 39.6 64.6
Readers with 5+ cancers (known stage) 186 35 90 129 263
Stage 0 or I cancers 3,151 233 860 785 5,557
Total cancers (known stage) 3,983 265 1,437 1,983 8,603
% Stage 0 or I cancer (Median - 50th percentile) 80 83.3 60 40 64.5
% Stage 0 or I cancer (25th, 75th percentiles) 69.2, 87.7 80.0, 100 42.1, 75.0 28.6, 50.0 54.5, 73.7
% Stage 0 or I cancer (10th, 90th percentiles) 60.0, 95.8 71.4, 100 33.3, 80.5 16.7, 60.0 43.8, 82.8

Notes

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.

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.

Table numbers last updated Sept 30, 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/diagnostic/2009/table6.html

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