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Abnormal Interpretations by Indication for Examination for 363,048 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
Abnormal interpretation rate* 15.4% 4.8% 7.5% 17.7% 11.3%
Abnormal final interpretations 21,326 3,364 8,013 8,282 40,985
All examinations 138,361 70,345 107,489 46,853 363,048
PPV2 23.8% 18.3% 26.4% 34.0% 25.9%
Cancers 5,075 617 2,113 2,816 10,621
Abnormal final interpretations 21,326 3,364 8,013 8,282 40,985
PPV3 27.6% 22.0% 30.3% 39.0% 29.9%
Cancers 4,663 560 1,713 2,419 9,355
Abnormal final interpretations, with known biopsy 16,871 2,545 5,653 6,208 31,277

Notes

Numbers are frequencies unless otherwise indicated.

The first non-zero assessment within 90 days was used as the final assessment for analysis.

* Abnormal interpretation rate = the percentage of examinations with an abnormal final interpretation
(BI-RADS category 4 or 5; Note: 0 or 3 with a recommendation for biopsy was recoded as 4).

PPV2 = the percentage of examinations with an abnormal final interpretation that result in a tissue diagnosis of cancer within 1 year.

§ PPV3 = the percentage of examinations with an abnormal final interpretation, where it is known that a biopsy was performed as a result of the abnormal diagnostic examination, that result in a tissue diagnosis of cancer within 1 year.

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/table3.html

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