Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal and hilar contours are unremarkable . Patchy opacity within the right lung base appears to reflect a combination of subsegmental atelectasis in the right lower lobe , best depicted on the lateral view , as well as streaky opacity within the right middle lobe which is concerning for pneumonia . Left lung is clear . No pleural effusion or pneumothorax is identified . Pulmonary vascularity is normal . There are no acute osseous abnormalities .
    OUTPUT:
    
Streaky opacity in the right middle lobe which is concerning for pneumonia . Linear opacity within the right lower lobe likely reflects subsegmental atelectasis . Follow up radiographs after treatment are recommended to ensure resolution of these findings .