Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are decreased and there is bibasilar atelectasis as well as new increased opacity in the left lower lobe . There is no pleural effusion or pneumothorax . The cardiac and mediastinal contours are normal . Degenerative changes in the thoracic spine are unchanged .
    OUTPUT:
    
New focal opacity in left lower lobe concerning for pneumonia .