Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An endotracheal tube terminates in appropriate position , and an enteric tube terminates in the stomach . There is a left retrocardiac opacity with left basilar atelectasis aso noted . There is no pulmonary edema or pneumothorax . Aortic knob calcifications are seen .
    OUTPUT:
    
1 . Appropriate position of support devices . 2 . Left retrocardiac opacity with left basilar atelectasis , possibly reflecting aspiration . Recommend follow - up imaging , and CT can be obtained if no interval improvement .