- Communication between Bronchus and pleural cavity
- Empyema draining through Bronchus
- Lung Abscess invading pleural cavity
- Chronic productive cough
- Large volume Purulent Sputum
- Absent breath sounds on affected side
- Tympanic changes on affected side
- Dullness to percussion at lung base (Hydrothorax)
- Hyperresonant above dull area (Pneumothorax)
- Coin Test
- Succussion Splash
- Methylene blue injected into pleural cavity
- Appears in Sputum
- Hydropneumothorax