Table 4. Factors affecting the detectability of HHUS for mammographically suspicious microcalcifications.
| Pathologic and mammographic finding | HHUS | OR (95% CI) | p-value | |
|---|---|---|---|---|
| Not detected (n=12) No. (%) |
Detected (n=31) No. (%) |
|||
| Pathology | 0.001 | |||
| Benign | 11 (61.6) | 7 (38.9) | 1.000 | |
| Malignant | 1 (40.0) | 24 (96.0) | 37.714 (4.123–344.993) | |
| Extent (cm) | 0.017 | |||
| ≤1 | 7 (53.8) | 6 (46.2) | 1.000 | |
| > 1 | 5 (16.7) | 25 (83.3) | 5.833 (1.364–24.941) | |
| Shape | 0.014 | |||
| Punctate/round, amorphous, coarse heterogeneous | 11 (45.8) | 13 (54.2) | 1.000 | |
| Fine pleomorphic, linear, linear branching | 1 (5.3) | 18 (94.7) | 15.228 (1.743–133.065) | |
| Distribution | 0.528 | |||
| Regional, clustered | 10 (30.3) | 23 (69.7) | 1.000 | |
| Linear, segmental | 2 (20.0) | 8 (80.0) | 1.739 (0.312–9.694) | |
| Associated findings | 0.016 | |||
| None | 12 (50.0) | 12 (50.0) | 1.000 | |
| Mass, architectural distortion | 0 | 19 (100.0) | 39.020 (1.963–775.810) | |
| BI-RADS categories | 0.046 | |||
| 4a, 4b | 11 (39.3) | 17 (60.7) | 1.000 | |
| 4c, 5 | 1 (6.7) | 14 (93.3) | 9.059 (1.039–79.010) | |
| Breast densities | 0.894 | |||
| a, b | 4 (26.7) | 11 (73.3) | 1.000 | |
| c, d | 8 (28.6) | 20 (71.4) | 0.909 (0.222–3.715) | |
HHUS=handheld breast ultrasound; OR=odds ratio; CI=confidence interval; BI-RADS=Breast Imaging Reporting and Data System.