Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal . A patchy opacity is demonstrated within the right lower lobe which is concerning for pneumonia . Linear opacity in the left lung base likely reflects atelectasis . There is no pleural effusion or pneumothorax . There are no acute osseous abnormalities . Multilevel degenerative changes in the thoracic spine are unchanged .
    OUTPUT:
    
Patchy opacity in the right lower lobe concerning for pneumonia .