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Table 4 Main imaging findings, BI-RADS category and outcomes according to imaging modality

From: Randomized trial of surveillance with abbreviated MRI in women with a personal history of breast cancer– impact on patient anxiety and cancer detection

  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%)  
  1. Unless otherwise indicated, data are numbers of patients and data in parentheses are percentages
  2. aExtra-mammary lesions: 2 benign sternal masses (1 biopsied and 1 stable on follow-up) and 1 malignant lung mass (biopsied)
  3. **1 suspicious A-MRI finding was less conspicuous the day of the biopsy, for which follow-up was performed and showed stability