Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior radiograph , there is a mildly increased left retrocardiac opacity and obscuration of the left hemidiaphragm , consistent with mild left lower lobe atelectasis and probable small left pleural effusion . The degree of pulmonary edema has not changed . No new focal consolidation or pneumothorax . Moderate cardiomegaly is stable . No change in a left pacemaker continuous leads . Right PICC line terminates in the lower SVC , unchanged .
    OUTPUT:
    
Mildly worsened left lower lobe atelectasis and small effusion .