Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . Mild pulmonary edema appears slightly improved since the ___ examination . The aorta is tortuous and moderately calcified . There is no pneumothorax . A retrocardiac opacity likely represents edema and / or atelectasis . There is a small left pleural effusion . A right PICC terminates at the mid to lower SVC .
    OUTPUT:
    
1 . Mild pulmonary edema , improved since ___ . 2 . Small left pleural effusion . Left retrocardiac opacity is likely a combination of edema and atelectasis . Continued radiographic follow - up recommended .