Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Cardiomediastinal silhouette and hilar contours are unremarkable . Bilateral lower lobe bronchiectasis with associated bilateral lower lobe hazy opacities likely correspond to chronic fibrotic changes as on prior CT .
    OUTPUT:
    
Bilateral lower lobe bronchiectasis and chronic fibrotic changes .