Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single - lead ICD is in unchanged position . The lung volumes are low , somewhat limiting evaluation . There is minimal bibasilar atelectasis . The lungs are otherwise clear , without a consolidation or edema . There is no pleural effusion or pneumothorax . The mediastinal contours are normal . The heart is mildly enlarged , unchanged from prior exam .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Unchanged mild cardiomegaly .