Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP view of the chest provided . Right chest tube is in stable position . No pneumothorax . Moderate right pleural effusion and moderate atelectasis of the right middle and lower lobe is unchanged . Mild platelike atelectasis at the left lung base is unchanged . Postsurgical changes are stable .
    OUTPUT:
    
Postsurgical changes are stable . Moderate atelectasis at the right lung base and midlung are unchanged . No significant changes from the previous examination .