Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . Lung volumes are low . Opacities in the lingula suggest pneumonia in the appropriate setting . Elsewhere , the lungs are probably clear although it is difficult to exclude vague additional area of possible infection in the left lower lobe . Elsewhere the lungs appear clear . There is no pleural effusions or pneumothorax . Bones appear demineralized .
    OUTPUT:
    
Vague opacity in the left lower lung , probably for the most part in the lingula , concerning for possible pneumonia in the appropriate setting .