Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single erect AP portable view of the chest was obtained . There is blunting of the left costophrenic angle suggesting a small pleural effusion with overlying atelectasis . The right lung is clear . The cardiac silhouette is enlarged . The aorta is calcified and tortuous . No overt pulmonary edema is seen . There is no evidence of pneumothorax . Minimal biapical pleural thickening is seen .
    OUTPUT:
    
Blunting of the left costophrenic angle suggests a small pleural effusion with overlying atelectasis , new since the prior study . Enlarged cardiac silhouette . No pulmonary edema .