Chronic empyema

The course of acute empyema is more than 6 weeks. Cellulose in the pus is deposited on the viscera and parietal pleura and gradually thickens. It forms a thick fibrous plate, which prevents the lungs from expanding and the pus cavity from shrinking. Opening of the chest. Over time, thickened and mechanized fibrous layers can cause thoracic spine deformities, mediastinal displacement, and respiratory dysfunction due to contraction of scar tissue.