Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left basal atelectasis along with right basal atelectasis are relatively unchanged findings when compared to the prior x-rays and CTs . There is no focal opacities suggestive of pneumonia . There is no overt pulmonary edema . There is no pleural effusion or pneumothorax . Cardiomediastinal silhouette is normal in size .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . Scattered areas of atelectasis .