Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Lung volumes are low limiting assessment with scattered areas of atelectasis . The heart is mildly enlarged . The aorta appears unfolded . No convincing signs of pneumonia or overt CHF . No large effusion or pneumothorax . Bony structures appear grossly intact .
    OUTPUT:
    
Mild cardiomegaly , scattered atelectasis . No overt signs of pneumonia or edema .