Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . New opacity in the right base is likely atelectasis . No other focal opacities are seen . Cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No pleural effusion or pneumonia . New opacity in the right base is likely atelectasis .