Table 6 Diagnostic yield according to the CT bronchus sign, Chest X-ray findings and lesion size
CT bronchus sign | Visibility on Chest X-ray | Lesion size | Diagnostic yield % (total/malignancy) |
|---|---|---|---|
A | Clearly visible | All size | 88.0/98.6 |
≥20 mm | 91.9/100 | ||
<20 mm | 76.9/94.6 | ||
Vague or invisible | All size | 77.8/82.8 | |
≥20 mm | 83.3/83.3 | ||
<20 mm | 75.0/82.4 | ||
B | Clearly visible | All size | 68.8/90.9 |
≥20 mm | 87.5/83.3 | ||
<20 mm | 60.0/100 | ||
Vague or invisible | All size | 63.6/59.1 | |
≥20 mm | 50.0/50.0 | ||
<20 mm | 65.2/64.3 |