Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP frontal and lateral views of the chest were obtained . The right lung volume is slightly low , unchanged from the prior study . There is no focal consolidation , pleural effusion or pneumothorax . Heart size is normal . Mediastinal silhouette and hilar contours are normal allowing for low lung volumes .
    OUTPUT:
    
No acute cardiopulmonary process .