BCSC
Breast Cancer Surveillance Consortium: Working together to advance breast cancer research
 
Home   |   Data   |   Statistics   |   Tools   |   Collaborations   |   Work with Us   |   Publications   |   About   |   Links

Abnormal Interpretations by Indication for Examination for 714,984 Diagnostic Mammography Examinations from 1996 - 2005 --- based on BCSC data as of 2007

You are viewing the 2007 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
Abnormal interpretation rate* 14.4% 4.1% 6.4% 13.2% 9.6%
Abnormal interpretations 33,517 6,668 12,882 15,414 68,481
All examinations 232,678 163,155 202,490 116,661 714,984
PPV1 (abnormal interpretation) 26.9% 22.2% 31.2% 44.4% 31.2%
Cancers 9,013 1,482 4,023 6,847 21,365
Abnormal interpretations 33,517 6,668 12,882 15,414 68,481
PPV2 (biopsy recommended) 26.7% 22.5% 31.6% 44.3% 31.1%
Cancers 8,596 1,440 3,775 6,274 20,085
Abnormal interpretations 32,150 6,396 11,954 14,173 64,673
PPV3 (biopsy performed) 31.3% 28.3% 38.3% 50.9% 36.5%
Cancers 7,762 1,339 3,262 5,332 17,695
Abnormal interpretations 24,762 4,726 8,518 10,473 48,479

Notes

Numbers are frequencies unless otherwise indicated. 58161 (7.4%) examinations were given an initial BI-RADS assessment of zero. The first non-zero assessment within 180 days was used as the final assessment for analysis. Examinations without a non-zero assessment within 180 days were excluded (26414,3.3%).

* Abnormal interpretation rate = the percentage of examinations interpreted as suspicious or highly suggestive of malignancy (BI-RADS category 4 or 5).

PPV1 = the percentage of examinations with an abnormal interpretation that results in a tissue diagnosis of cancer within 1 year.

PPV2 = the percentage of examinations with an abnormal interpretation and a recommendation for biopsy or surgical consultation that results in a tissue diagnosis of cancer within 1 year.

PPV3 = the percentage of known biopsies performed as a result of an abnormal interpretation with a recommendation for biopsy or surgical consultation that results in a tissue diagnosis of cancer within 1 year.

Table numbers last updated September 19, 2007. The following source must be cited when reproducing this table: NCI-funded Breast Cancer Surveillance Consortium co-operative agreement (U01CA63740, U01CA86076, U01CA86082, U01CA63736, U01CA70013, U01CA69976, U01CA63731, U01CA70040). Downloaded xx/xx/xxxx from the Breast Cancer Surveillance Consortium Web site - http://breastscreening.cancer.gov/statistics/benchmarks/diagnostic/2007/table3.html

[Return to Performance Benchmarks for Diagnostic Mammography]