BENCHMARKS FOR CANCERS FOR SCREENING MAMMOGRAPHY
BAsed on BCSC Data, 2007 - 2013 *
Cancer Detection Rate
| Number of Screening Exams | |
|---|---|
| Cancer detection rate (per 1000) | 4.8 |
| Readers with 1000+ examinations | 242 |
| Cancers | 7,033 |
| All examinations | 1,453,003 |
| CDR (Median-50th percentile) | 4.6 |
| CDR (25th, 75th percentiles) | 3.7, 5.7 |
| CDR (10th, 90th percentiles) | 2.7, 6.8 |
SMOOTHED PLOT OF CANCER DETECTION RATE FREQUENCY DISTRIBUTION+
FOR 1,453,003 SCREENING MAMMOGRAPHY EXAMS (AMONG RADIOLOGISTS WITH 1000+ EXAMS)
Invasive Cancer Size
| Number of Screening Exams | |
| Invasive cancer size | |
| Readers with 15+ invasive cancers (known size) | 110 |
| Cancers | 3,713 |
| Mean tumor size in mm (Median - 50th percentile) | 15.1 |
| Mean tumor size in mm (25th, 75th percentiles) | 13.6, 16.8 |
| Mean tumor size in mm (10th and 90th percentile) | 12.4, 19.1 |
| Median tumor size in mm (Median - 50th percentile) | 12 |
| Median tumor size in mm (25th, 75th percentiles) | 11, 14 |
| Median tumor size in mm (10th, 90th percentiles) | 10, 15 |
SMOOTHED PLOT OF Invasive Cancer Size FREQUENCY DISTRIBUTION+
FOR 3,713 INVASIVE CANCERS OF KNOWN SIZE THAT WERE IDENTIFIED AT SCREENING MAMMOGRAPHY (AMONG RADIOLOGISTS FINDING 15+ INVASIVE CANCERS OF KNOWN SIZE), 2007 - 2013
Minimal Cancer Percentage
| Number of Screening Exams | |
| %Minimal cancer‡ | 56.1 |
| Readers with 15+ cancers (DCIS/invasive size known) | 140 |
| Minimal cancers | 3,103 |
| Total cancers (DCIS/invasive size known) | 5,531 |
| %Minimal cancer (Median - 50th percentile) | 54.8 |
| %Minimal cancer (25th, 75th percentiles) | 46.7, 61.5 |
| %Minimal cancer (10th, 90th percentiles) | 39.2, 66.3 |
SMOOTHED PLOT OF MINIMAL CANCER PERCENTAGE FREQUENCY DISTRIBUTION+
FOR 5,531 DCIS AND INVASIVE CANCERS OF KNOWN SIZE THAT WERE IDENTIFIED AT SCREENING MAMMOGRAPHY (AMONG RADIOLOGISTS FINDING 15+ DCIS AND INVASIVE CANCERS OF KNOWN SIZE), 2007 - 2013
Percent Node Negative
(Invasive Cancers Only)
| Number of Screening Exams | |
| %Node negative (invasive cancers only) | 81.1 |
| Readers with 15+ invasive cancers (known nodal status) | 111 |
| Node negative invasive cancers | 3,046 |
| Total invasive cancers (known nodal status) | 3,754 |
| %Node negative cancer (Median - 50th percentile) | 81 |
| %Node negative cancer (25th, 75th percentiles) | 75.0, 86.7 |
| %Node negative cancer (10th, 90th percentiles) | 71.8, 90.0 |
SMOOTHED PLOT OF NODE-NEGATIVE PERCENTAGE FREQUENCY DISTRIBUTION+
FOR 3,754 INVASIVE CANCERS THAT WERE IDENTIFIED AT SCREENING MAMMOGRAPHY (AMONG RADIOLOGISTS FINDING 15+ INVASIVE CANCERS OF KNOWN NODAL STATUS), 2007 - 2013
Percent Stage 0 or I
| Number of Screening Exams | |
| %Stage 0 or I | 78.6 |
| Readers with 15+ cancers (known stage) | 143 |
| Stage 0 or I cancers | 4,748 |
| Total cancers (known stage) | 6,037 |
| %Stage 0 or I cancer (Median - 50th percentile) | 78.7 |
| %Stage 0 or I cancer (25th, 75th percentiles) | 72.7, 83.6 |
| %Stage 0 or I cancer (10th, 90th percentiles) | 66.7, 87.5 |
SMOOTHED PLOT OF STAGE 0 OR I PERCENTAGE FREQUENCY DISTRIBUTION+
FOR 6,037 CANCERS OF KNOWN STAGE THAT WERE IDENTIFIED AT SCREENING MAMMOGRAPHY (AMONG RADIOLOGISTS FINDING 15+ CANCERS OF KNOWN STAGE), 2007 - 2013
Footnotes:
Numbers are frequencies unless otherwise indicated.
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.
* Includes examinations for radiologists with minimum numbers of cases in a given row as designated; excludes examinations for which the radiologist is unknown.
‡ 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.
Tables and figures 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 the National Cancer Institute (P01CA154292). Downloaded xx/xx/xxxx from the Breast Cancer Surveillance Consortium Web site - http://www.bcsc-research.org/."