Radiologic diagnoses to predict vocal cord paralysis
| Majority Positive (No.) (%) | Sensitivity | Specificity | Positive Predictive Value | Negative Predictive Value | |
|---|---|---|---|---|---|
| Dilation of ipsilateral pyriform sinus | 91 (63.6%) | 68.3% | 48.7% | 78.0% | 36.5% |
| Medial rotation of ipsilateral aryepiglottic fold | 76 (53.1%) | 60.6% | 66.7% | 82.9% | 38.8% |
| Thickening of ipsilateral aryepiglottic fold | 19 (13.3%) | 16.3% | 94.9% | 89.5% | 29.8% |
| Anteromedial displacement of ipsilateral arytenoid cartilage | 42 (29.4%) | 36.5% | 89.7% | 90.5% | 34.7% |
| Medial displacement of posterior aspect of ipsilateral vocal fold | 100 (69.9%) | 78.8% | 53.8% | 82.0% | 48.8% |
| Mushroom sign | 9 (6.3%) | 7.7% | 97.4% | 89.9% | 28.4% |
| Dilation of ipsilateral laryngeal ventricle | 87 (60.8%) | 69.2% | 61.5% | 82.8% | 42.9% |
| Loss of subglottic arch | 7 (4.9%) | 5.8% | 97.4% | 85.7% | 27.9% |
| Final diagnosis of paralysisa | 84 (59.2%) | 68.0% | 64.1% | 83.3% | 43.0% |
↵a n = 142: omitted 1 tie (1 positive, 1 negative, 1 missing value).