Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . The cardiac , mediastinal and hilar contours appear unchanged including surgical clips projecting along the anterior left side of the mediastinum . A confluent opacity in the left lower lobe is concerning for pneumonia . There is also a small component of opacification in the lingula . Elsewhere the lungs appear clear . There no pleural effusions or pneumothorax .
    OUTPUT:
    
Findings suggest pneumonia involving of the left lower lobe and perhaps to some extent the lingula .