What is the differential diagnosis for a unilateral hyperlucent lung?
Pneumothorax; absent pectoral muscle (Poland syndrome); lobar emphysema (congenital).
What could the fluid in a hydro-pneumothorax be?
Blood, pus or chyle, denoting haemo-, pyo- or chylo-thorax.
Vascular markings are absent in the left lung field suggestive of collapsed left lung. Air-fluid level seen on the left side suggestive of hydropneumothorax.
On the right side, there is a cavitary lesion with surrounding fibrosis noted in the upper zone.
Mediastinum is shifted towards right side.