Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are well expanded . Subtle , indistinct , left greater than right opacities likely correspond to those seen on recent CT . No pleural abnormalities . Heart size is normal . Cardiomediastinal and hilar silhouettes are normal . An endotracheal tube terminates approximately 4 .5 cm above the carina . And enteric tube terminates below the GE junction .
    OUTPUT:
    
Subtle , indistinct , left greater than right opacities likely correspond to those seen on recent CT , possibly infectious .