Table 1:
| Ultrasound Finding | Prevalence in involved nodes | Sensitivity | Specificity |
|---|---|---|---|
| Hyperechoic relative to muscle | 8% | 86% | 96% |
| Cystic component | 21% | 20% | 100% |
| Calcifications | 5% | 50% | 100% |
| Loss of a fatty hilum | 99% | 88% | 90% |
| Rounded shape* | 34% | 80% | 71% |
short to long axis ratio 0.5 or greater