What are the major substances that may collect within the pleural space?
- • Fluid: pleural effusion (plasma ultrafiltrate, chyle, bile, urine, gastrointestinal contents, or ascites)
- • Blood: hemothorax
- • Gas: pneumothorax
- • Pus: empyema
- • Cells: pleural tumor
- • Fibrosis: fibrothorax
