Tympanic note

• Pneumothorax
• Emphysematous bulla
• Subpleural lung cyst
• Left sided hiatus hernia

Hyperresonant note

• Emphysema
• Lung cysts

Impaired (Diminished) note

• Thick pleura
• Lung fibrosis
• Lung collapse
• Lung tumors
• Consolidation of lung
• Early pleural effusion

Dull note

• Consolidation
• Pleural effusion
• Empyema