Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube terminates 3 cm from the carina . Enteric tube terminates in left upper quadrant . Lungs are clear aside from heterogeneous retrocardiac opacification which likely corresponds to atelectasis . Cardiomediastinal silhouette is normal . No right pleural effusion . Left costophrenic angle is excluded from the field - of - view .
    OUTPUT:
    
Satisfactory position of endotracheal and enteric tubes . Mild left basilar atelectasis .