Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal and orogastric tubes are unchanged in position . Multiple mediastinal clips denote recent cardiac surgery . There has been a marked worsening of left lower lobe atelectasis , with an unchanged neighboring small pleural effusion . There is no pneumothorax . Central pulmonary vessels remain congested , with mild interstitial edema that has slightly worsened since yesterday 's examination .
    OUTPUT:
    
Collapsed left lower lobe , with a superimposed mild interstitial edema . Small left pleural effusion .