Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild bibasilar atelectasis is noted . Chronic elevation of the right hemidiaphragm is unchanged . The cardiomediastinal silhouette and hilar contours are unremarkable . No pneumothorax , pulmonary edema , or pneumonia .
    OUTPUT:
    
1 . No evidence of mass lesion or acute cardiopulmonary process .