Table 19.2.
Mediastinal lines
| Line | Aetiology | Course | Width | Enlargement |
|---|---|---|---|---|
| Posterior junctional line | Apposition of posterior parietal and visceral pleura | Straight convex | 2 mm | Lymph nodes Paravertebral mass |
| Anterior junctional line | Apposition of the anterior parietal and visceral pleura | Y-shaped behind the sternum | ||
| Paratracheal line | Fat stripe | Vertical line to the right of the trachea | 4 mm |
Mediastinal mass Aberrant right upper lobe bronchus |
| Esophageal interface | Pleural sulcus, which abuts the oesophagus and azygous | From the centre towards the right to the carina | 2 mm |
Air-filled oesophagus Esophageal masses |
| Paraspinal line | Paravertebral space | Vertical in direction parallel to the spine |
Left < 10 mm Right < 3 mm |
Inflammatory Tumours Degenerative |