Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are unchanged . Increased density in the right lower lobe corresponds to known right lower lobe mass , better characterized on prior CT examination from ___ . The left lung is clear . There are no pleural effusions or pneumothorax .
    OUTPUT:
    
No radiographic evidence of an acute cardiopulmonary process , no pneumothorax .