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 vascularity is normal . Streaky opacity within the right lung base may reflect atelectasis although an area of developing infection can not be completely excluded . There is no pleural effusion or pneumothorax . No acute osseous abnormalities are detected .
    OUTPUT:
    
Streaky opacity in the right lung base could reflect atelectasis though infection can not be completely excluded .