Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette is stable . Pacemaker leads are unchanged position . Increased airspace opacities projecting over the lower spine on the lateral radiograph could represent pneumonia in the appropriate clinical context . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Increased airspace opacities projecting over the lower spine on the lateral radiograph could represent pneumonia in the appropriate clinical context .