Table 4.
Statistical parameters of neck US, CT, PET/CT, and combination methods for the detection of SCN metastases in breast cancer
| US | CT | PET/CT | US+CT | US+PET/CT | |
|---|---|---|---|---|---|
| Sensitivity (%) | 21/24 (87.5) | 20/24 (83.3) | 22/24 (91.7) | 22/24 (91.7) | 23/24 (95.8) |
| Specificity (%) | 1117/1124 (99.4) | 1111/1124 (98.8) | 1124/1124 (100.0) | 1105/1124 (98.3) | 1117/1124 (99.4) |
| Positive predictive value (%) | 21/28 (75.0) | 20/33 (60.6) | 22/22 (100.0) | 22/41 (53.7) | 23/30 (76.7) |
| Negative predictive value (%) | 1117/1120 (99.7) | 1111/1115 (99.6) | 1124/1126 (99.8) | 1105/1107 (99.8) | 1117/1118 (99.9) |
| False positive rate (%) | 7/1124 (0.6) | 13/1124 (1.2) | 0 | 19/1124 (1.7) | 7/1124 (0.6) |
| False negative rate (%) | 3/1120 (0.3) | 4/1115 (0.4) | 2/1126 (0.2) | 2/1107 (0.2) | 1/1118 (0.1) |
| Accuracy (%) | 1138/1148 (99.1) | 1131/1148 (98.5) | 1146/1148 (99.8) | 1127/1148 (98.1) | 1140/1148 (99.3) |
US, ultrasonography; CT, computed tomography; PET/CT, positron emission tomography/computed tomography; SCN, supraclavicular lymph node.