Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . There is no pneumothorax . A small left pleural effusion is stable . Bilateral infrahilar opacities are not worsened on the current study and likely represent pneumonia versus atelectasis .
    OUTPUT:
    
Bilateral infrahilar opacities , not worsened , and consistent with pneumonia versus atelectasis .