Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Dual - chamber pacemaker , enteric tube , and endotracheal tube are in satisfactory position . Mild cardiomegaly is stable . There is new retrocardiac opacification and blunting of the left costophrenic angle likely representing a pleural effusion and left lower lobe collapse .
    OUTPUT:
    
New left lower lobe collapse and small to moderate left pleural effusion .