Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube terminates 3 .1 cm above the carina . NG tube terminates near the pylorus . Extensive , bilateral alveolar opacities with improved aeration in the upper lungs bilaterally . Increased distance between the left hemidiaphragm and intestinal gas suggests a possible left subpulmonic effusion . Normal cardiomediastinal contours .
    OUTPUT:
    
Extensive alveolar opacities with improved aeration in the upper lungs may reflect resolving aspiration , cardiogenic pulmonary edema , or noncardiogenic pulmonary edema .