Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pleural effusion has decreased in size in the interval since the last study . A small right - sided pleural effusion may remain . Cardiomegaly is again present , especially at the left ventricular contour . The aorta is again tortuous . There is no pneumothorax or evidence of edema . The patient is status post median sternotomy .
    OUTPUT:
    
1 ) Decreasing left pleural effusion , now small in size . Perhaps small right pleural effusion . No evidence of pneumonia or edema 2 ) Stable cardiomegaly .