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Frequency of malignancy according to uptake patterns and LBR on dedicated breast PET.
| Benign (n = 244) | Malignant (n = 32) | P | |
|---|---|---|---|
| Uptake pattern | < 0.001 | ||
| Focus | 205 (90.3) | 22 (9.7) | |
| Mass | 5 (71.4) | 2 (28.6) | |
| Non-mass | 34 (81.0) | 8 (19.0) | |
| Distribution | < 0.001 | ||
| Linear | 0 (0) | 1 (100) | |
| Focal | 9 (81.8) | 2 (18.2) | |
| Segmental | 2 (28.6) | 5 (71.4) | |
| Regional | 14 (0) | 0 (0) | |
| Diffuse | 9 (100) | 0 (0) | |
| LBR | < 0.001 | ||
| Low | 122 (95.3) | 6 (4.7) | |
| High | 122 (82.4) | 26 (17.6) |
IQR, interquartile range; LBR, lesion-to-background ratio.
