Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged but unchanged . The aorta is mildly unfolded and demonstrates atherosclerotic calcifications . Mediastinal and hilar contours are otherwise unchanged . There is no pulmonary edema . Streaky opacities in the lung bases likely reflect areas of atelectasis . No pleural effusion or pneumothorax is identified . There are mild degenerative changes noted in the imaged thoracolumbar spine . Multiple clips are again demonstrated in the right upper quadrant of the abdomen . .
    OUTPUT:
    
Patchy opacities in the lung bases most likely reflective of atelectasis .