Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube tip terminates approximately 4 .6 cm from the carina . Heart size is borderline enlarged . Mediastinal and hilar contours are grossly unremarkable . Low lung volumes are present which results in crowding of bronchovascular structures , but no pulmonary edema is seen . Patchy opacities in the lung bases may reflect areas of atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . There are no acute osseous abnormalities detected .
    OUTPUT:
    
1 . Endotracheal tube in standard position . 2 . Low lung volumes . Patchy opacities within the lung bases may reflect areas of atelectasis . Aspiration or infection , however , can not be completely excluded in the correct clinical setting .