Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is stable . Slight increase in mediastinal silhouette may be positional or may reflect increased unfolding of the thoracic aorta . There is no pleural effusion or pneumothorax . Lungs are well expanded with no focal consolidation concerning for pneumonia .
    OUTPUT:
    
No focal consolidation concerning for pneumonia .