Cancers by Indication for Exam

Cancers by Indication for Examination for 401,548 Diagnostic Mammography Examinations from 2007 - 2013

Based on BCSC data through 2013

  Work-Up of Abnormal Screening Exams Short-Interval Follow-Up Evaluation of Breast Problem/ No Lump or Lump Unknown Evaluation of Breast Problem/ Palpable Lump All Diagnostic Exams
  N = 128,976 N = 51,440 N = 74,426 N = 35,308 N = 401,548**
All Cancers* 5,909 525 1,853 2,279 13,915
Cancer diagnosis rate (per 1000) 45.8 10.2 24.9 64.5 34.7
Cancer histology
DCIS 1,869 (31.6) 203 (38.7) 354 (19.1) 151 (6.6) 3,329 (23.9)
All invasive 4,040 (68.4) 322 (61.3) 1,499 (80.9) 2,128 (93.4) 10,586 (76.1)
Invasive cancer size
Invasive, 1-5 mm 491 (12.6) 50 (16.2) 94 (6.7) 54 (2.7) 955 (9.5)
Invasive, 6-10 mm 1,040 (26.7) 81 (26.3) 187 (13.4) 168 (8.3) 1,858 (18.4)
Invasive, 11-15 mm 942 (24.1) 78 (25.3) 219 (15.7) 324 (16.0) 2,049 (20.3)
Invasive, 16-20 mm 531 (13.6) 38 (12.3) 196 (14.1) 336 (16.6) 1,444 (14.3)
Invasive, >20 mm 898 (23.0) 61 (19.8) 697 (50.0) 1,147 (56.5) 3,767 (37.4)
Invasive, size unknown 138 14 106 99 513
Invasive, mean size (mm) 16.1 15.7 25.8 28.5 21.3
Invasive, median size (mm) 12 12 20 23 16
Minimal cancer§ 3,385 (58.8) 329 (65.0) 622 (35.9) 361 (16.7) 6,097 (45.6)
Axillary lymph node status (invasive cancers)||
Node negative 3,125 (79.5) 248 (81.0) 872 (62.0) 1,198 (58.6) 7,074 (69.6)
Node positive 808 (20.5) 58 (19.0) 534 (38.0) 847 (41.4) 3,083 (30.4)
Nodal status unknown 107 16 93 83 429
Cancer stage#
Stage 0 1,869 (32.5) 203 (40.0) 354 (20.4) 151 (7.0) 3,329 (24.9)
Stage I 2,567 (44.7) 213 (42.0) 543 (31.4) 641 (29.7) 5,151 (38.6)
Stage II 1,049 (18.3) 72 (14.2) 568 (32.8) 949 (44.0) 3,543 (26.6)
Stage III 218 (3.8) 17 (3.4) 197 (11.4) 331 (15.3) 1,031 (7.7)
Stage IV 42 (0.7) 2 (0.4) 70 (4.0) 86 (4.0) 290 (2.2)
Stage unknown 164 18 121 121 571
Notes:
Numbers are frequencies unless otherwise indicated.
**  Includes 94,228 exams from one registry for which sub-classification of diagnostic indication (e.g., additional evaluation, short interval follow-up, etc.) was not available.
*  Cancers = The number of cancers diagnosed within 1 year following an examination with an abnormal final interpretation. (BI-RADS category 4 or 5; Note: 0 or 3 with a recommendation for biopsy was recoded as 4).
 Numbers in parentheses are percentages of all cancers.
 Numbers in parentheses are percentages of invasive cancers of known size.
§  Minimal cancer = DCIS or invasive cancer 1-10 mm; numbers in parentheses are percentages of DCIS + invasive cancer of known size.
||  Numbers in parentheses are percentages of invasive cancers of known nodal status.
#  Numbers in parentheses are percentages of DCIS + invasive cancers of known stage.
Table numbers 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/."