Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal contours are within normal limits . The bilateral hila are unremarkable . There is a subtle right lower lobe opacity new since prior exam concerning for developing pneumonia . There is no evidence of pulmonary vascular congestion . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Probable developing right lower lobe pneumonia .