Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are normal . Faint opacity in the right upper lobe could represent atelectasis or developing pneumonia . There is no pneumothorax or pleural effusion . The osseous structures are unremarkable
    OUTPUT:
    
Faint opacities in the right upper lobe could represent atelectasis or developing pneumonia