Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: 2 frontal views of the chest demonstrates somewhat lower lung volumes than on the prior study . Additionally , there is an area of linear atelectasis within the right lung base . The heart size is stable . The cardiomediastinal silhouette is unremarkable . There is no blunting of the costophrenic angles to suggest pleural effusion . No pneumothorax is present . No evidence of pneumonia .
    OUTPUT:
    
No acute cardiopulmonary process .