Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Cardiomediastinal silhouette and hilar contours are normal . Left lower lobe segmental consolidation with additional left lower lobar bronchiectasis ( best seen on frontal view , in retrocardiac location ) , is compatible with pneumonia . Lungs are otherwise clear . Subtle opacity at the right base may be atelectasis or additional focus of infection . Pleural surfaces are clear without effusion or pneumothorax .
    OUTPUT:
    
Left lower lobe pneumonia in the background of mild bronchiectasis . Subtle opacities at the right base may be atelectatic or represent an additional focus of infection .