Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette and hilar contours are unremarkable . Left lung base consolidation with focal loss of the hemidiaphragmatic contour is compatible with pneumonia . The remainder of the lung fields is clear . The pleural surfaces are clear without effusion or pneumothorax .
    OUTPUT:
    
Left lower lobe pneumonia .