Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube ends approximately 4 .6 cm from the carina . The cardiomediastinal silhouette is normal . Mild hazy opacification of the left upper lobe could be recent aspiration or developing pneumonia , but no radioopaque dental fragment is seen . There are no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Possible left upper lobe aspiration or developing pneumonia . No dental fragment . Results were telephoned to Dr . ___ at 1 :30 p .m . on ___ by Dr . ___ .