Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An orogastric and endotracheal tube are unchanged in position . Mediastinal clips denote recent cardiac history . Again seen is left lower lobe collapse . There is neighboring small left pleural effusion . Superimposed mild interstitial edema and pulmonary vascular congestion are unchanged since 3 : 29 a .m . There is no pneumothorax .
    OUTPUT:
    
Unchanged examination since 3 : 29 a .m . There is persistent collapse of the left lower lobe .