Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The inspiratory lung volumes are slightly decreased from the most recent prior study . The lungs are clear without focal consolidation concerning for pneumonia , pleural effusion , or pneumothorax . The pulmonary vasculature is not engorged . The cardiac silhouette is normal in size . The mediastinal and hilar contours are within normal limits . The trachea is midline . There is no free air beneath the right hemidiaphragm .
    OUTPUT:
    
No acute cardiopulmonary process .