Table 2. MRI features of the all the cases.
| Features | BRCA+ (n=93), n (%) | BRCA− (n=93), n (%) | Sporadic (n=93), n (%) | P1 | P2 | |
|---|---|---|---|---|---|---|
| BRCA1 (n=50) | BRCA2 (n=43) | |||||
| FGT | 0.13 | 0.38 | ||||
| 1+2 | 3 (6) | 1 (2.33) | 3 (3.23) | 9 (9.68) | ||
| 3+4 | 47 (94) | 42 (97.67) | 90 (96.77) | 84 (90.32) | ||
| BPE | 0.024* | 0.51 | ||||
| 1+2 | 39 (78) | 31 (72.09) | 57 (61.29) | 53 (56.99) | ||
| 3+4 | 11 (22) | 12 (27.91) | 36 (41.94) | 40 (43.01) | ||
| Lesion type | 0.053 | 0.03* | ||||
| Mass | 46 (92) | 31 (72.09) | 74 (79.57) | 68 (73.12) | ||
| NME | 4 (8) | 10 (23.26) | 12 (12.90) | 23 (24.73) | ||
| Both | 0 (0.0) | 2 (4.65) | 7 (7.53) | 2 (2.15) | ||
| T2WI | 0.19 | 0.11 | ||||
| Hypointensity | 16 (32) | 11 (25.58) | 32 (34.41) | 20 (21.50) | ||
| Isointensity | 30 (60) | 32 (74.42) | 59 (63.44) | 72 (77.42) | ||
| Hyperintensity | 4 (8) | 0 (0.0) | 2 (2.15) | 1 (1.08) | ||
| Curve type | 0.038* | 0.33 | ||||
| Type I | 2 (4) | 5 (11.63) | 6 (6.45) | 0 (0.0) | ||
| Type II | 15 (30) | 14 (32.56) | 41(44.09) | 39 (41.94) | ||
| Type III | 33 (66) | 24 (55.81) | 46 (49.46) | 54 (58.06) | ||
*, P<0.05. FGT was categorized into four levels: 1 = almost entirely fat, 2 = scattered fibroglandular density, 3 = heterogeneously dense, 4 = extremely dense. BPE was categorized into four levels: 1 = minimal, 2 = mild, 3 = moderate, 4 = marked. FGT, fibroglandular tissue; BPE, breast parenchymal enhancement; NME, non-mass enhancement.