Mammography (n = 198) | A- MRI (n = 104) | P value | |
---|---|---|---|
Normal | 189 (95.5) | 75 (72.1) | 0.00001 |
Recall / abnormal interpretation rate | 9 (4.5%) | 29 (27.9) | 0.00001 |
Mass | 1/9 | 15/29 | |
Calcifications | 6/9 | 0 | |
Asymmetry | 2/9 | 0 | |
Non mass enhancement | 0 | 9/29 | |
Mass/non mass enhancement | 0 | 1/29 | |
Extra-mammary findinga | 0 | 3/29 | |
Motion artifact | 0 | 1/29 | |
BI-RADS category after work-up/ full MRI diagnostic protocol | 0.84 | ||
2 | 2/9 (22.2%) | 2/29 (6.9%) | |
3 | 1/9 (11.1%) | 4/29 (13.8%) | |
4A | 3/9 (33.3%) | 10/29 (34.5%) | |
4B | 3/9 (33.3%) | 8/29 (27.6%) | |
5 | 0 (0%) | 2/29 (6.9%) | |
N/A (extra-mammary findings) | 0 (0%) | 3/29 (10.3%) | |
Outcome (abnormal) | 0.49 | ||
Work-up (> benign) | 2/9 (22.2%) | 2/29 (6.9%) | |
Stable on follow-up | 1/9 (11.1%) | 6/29 (20.7%) | |
Biopsied** | 6/9 (66.7%) (6/198 = 3.0%) | 21/29 (72.4%) (21/104 = 20.2%) | |
Outcome of biopsied lesions | 0.99 | ||
Benign | 5/6 (83.3%) | 15/21 (71.4%) | |
Atypical/high risk | 0 (0%) | 0 (0%) | |
Malignant | 1/6 (16.7%) | 6/21(28.6%) |