Table 1.
Baseline patient characteristics (n = 226)
| Age (years) | 54 | (45–67) |
|---|---|---|
| History of breast cancer | 40 | (18%) |
| Positive family history | 53 | (24%) |
| Referral by breast cancer screening program | 90 | (40%) |
| Hormonal status | ||
| Premenopausal | 63 | (28%) |
| Perimenopausal | 26 | (11%) |
| Postmenopausal | 131 | (58%) |
| Unknown | 6 | (3%) |
| Symptoms | ||
| No symptoms | 99 | (44%) |
| Pain | 14 | (6%) |
| Palpable mass | 60 | (26%) |
| Skin abnormality | 11 | (5%) |
| Nipple discharge | 42 | (19%) |
| Clinical classification | ||
| No abnormalities | 114 | (50%) |
| Benign | 55 | (24%) |
| Uncertain benign | 36 | (16%) |
| Uncertain malignant | 21 | (9%) |
| Breast density | ||
| a.Mostly fatty | 37 | (16%) |
| b.Some density (scattered) | 92 | (41%) |
| c.Moderately dense (heterogeneous) | 81 | (36%) |
| d.Extremely dense | 16 | (7%) |
| Indication MBI | ||
| BI-RADS 3 lesion | 49 | (22%) |
| Discrepancy with clinical findings | 44 | (19%) |
| History of breast surgery and equivocal lesion | 24 | (11%) |
| Mammography-detected lesion, occult with ultrasound | 63 | (28%) |
| MRI-detected lesion, occult with ultrasound | 7 | (3%) |
| Nipple discharge and equivocal or negative mammography + ultrasound | 39 | (17%) |
Data are median (IQR) or N (%).