Table 2.
Diagnostic Procedures Completed in 951 Women with Abnormal Mammography Results, by Breast Imaging Reporting and Data System Category, San Francisco Bay Area, 1999–2001
| |
|
BIRADS classification |
||
|---|---|---|---|---|
| Total tests done (n) | Probably benign (3) % (n) | Suspicious (4) /malignant (5) % (n) | Indeterminate (0) % (n) | |
| Sample size by BIRADS class | n=512 | n=298 | n=141 | |
| Procedures completed | ||||
| Magnification view | 258 | 19.7 (101) | 13.8 (41) | 82.3 (116) |
| Ultrasound | 284 | 22.3 (114) | 33.6 (100) | 49.7 (70) |
| Cyst aspiration | 21 | 0.4 (2) | 3.0 (9) | 7.1 (10) |
| Biopsy | 334 | 8.6 (44) | 84.9 (253) | 26.2 (37) |
| Follow-up mammography 6, months | 433 | 73.8 (378) | 9.1 (27) | 19.9 (28) |
| No follow-up documented | 51 | 5.3 (27) | 5.7 (17) | 5.0 (7) |
| Time to diagnosis | ||||
| Median time to first test (days) | 182 | 15 | 17 | |
| Mean time to first test (days) | 150.8±5.1 | 29.5±3.3 | 38.0±7.1 | |
| Median time to resolution (days) | 183 | 29 | 27 | |
| Mean time to resolution (days) | 166.6±5.6 | 49.2±4.8 | 48.2±7.1 | |
| Percent resolved by 60 days (n) | 29 (145) | 84 (237) | 82 (113) | |