Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The Lungs are clear without any focal opacities , pleural effusion , pulmonary edema or pneumothorax . Bibasilar opacities are likely secondary to atelectasis and soft tissue density from overlying breast tissue . The heart is at the upper limit of normal in size . The mediastinal contours are normal .
    OUTPUT:
    
No acute cardiopulmonary process .