Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is again mildly enlarged . The mediastinal and hilar contours appear unchanged . Pleural effusions have more fully resolved . There is persistent patchy opacification of the right mid upper and left upper lungs , which are background findings . Streaky left basilar opacity also has improved . Pulmonary edema has more fully resolved . A PICC line again terminates in the superior vena cava .
    OUTPUT:
    
No evidence of acute disease .