Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The cardiomediastinal and hilar contours are within normal limits . There is no pneumothorax , fracture or dislocation . Limited assessment of the abdomen is unremarkable . An opacity at right lung base is concerning for pneumonia . No pneumothorax .
    OUTPUT:
    
An opacity at the right lung base is concerning for pneumonia .