Table 2. US results.
US, ultrasonography; pts, patients; PPV, positive predictive value; NPV, negative predictive value.
| US Results No : 19 pts | |
| PPV | 63.6% |
| NPV | 87.5% |
| Sensitivity | 87.5% |
| Specificity | 63.6% |
| Accuracy | 73% |
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