Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are unremarkable . The lung volumes are low . There are patchy basilar opacities , particularly prominent in the retrocardiac region of the left lower lobe . On the right , a small pleural effusion is suspected . Bony structures are unremarkable .
    OUTPUT:
    
Patchy basilar opacities concerning for pneumonia in the appropriate setting .