Table 2:
Reliability of endosonography and cervical mediastinoscopy in mediastinal staging
| NPV | NNT | |
|---|---|---|
| All patients (n = 147) | ||
| Endosonography (n = 147) | ||
| CM gold standard | 88.7% | 8.8 |
| CM and/or thoracotomy gold standard | 80.9% | |
| Cervical mediastinoscopy (n = 124) | ||
| Thoracotomy gold standard | 90% | 10 |
| High probability based on FDG-PETa (n = 55) | ||
| Endosonography (n = 55) | ||
| CM golden standard | 83.6% | 6.1 |
aPatients with 18FDG-PET positive mediastinal lymph nodes.
CM: cervical mediastinoscopy; NPV: negative predictive value; NNT: number needed to treat, to find one false-negative result of the diagnostic procedure.