Template:Estimating pneumothorax size
Revision as of 02:56, 14 May 2015 by Rossdonaldson1 (talk | contribs) (→Estimating Pneumothorax Size)
Estimating Pneumothorax Size
- On a conventional, upright posterior-anterior chest radiograph:
- Very small: <1 cm interpleural distance (confined to upper 1/3 of chest) OR only seen on CT
- Small: ≤3cm lung apex to cupola (chest wall apex) on CXR
- Large: >3cm lung apex to cupola (chest wall apex) on CXR
- 3cm apex to cupola measurement is roughly equivalent to 2cm interpleural distance (at the level of the hilum)
- Both roughly correlate with a 50% pneumothorax by volume