Cystic Fibrosis - Bronchiectasis Bilateral diffuse Multiple cavities / Bronchiectasis Peribronchial fibrosis Prominent hilum Hyperinflated

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Obstructive lung disease Increase TLC Increase in RV Decrease in peak expiratory flow e.g. asthma Increased airway resistance  increased loss of pressure  early small airway closure  decreased FVC, FEV1 and increased RV

Restrictive disease Decreased TLC Decrease in RV e.g. fibrosis Decreased ability of lungs to expand during inspiration  decreased FVC Only inspiration affected.

normal (A), obstructive (B), and restrictive (C) patterns.