Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is known with chronic bibasilar atelectatic bands with bronchiectasis ; however , there is increased density in left lower lobe which could reflect a new infectious process . Mediastinal and cardiac contours are unremarkable . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
New opacities in left lower lobe could reflect a focal pneumonia or atelectasis . Dr . ___ have been verbally contacted for the results .