Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of an ET tube ending 4 .2 cm above the carina . An NG tube is seen extending below the diaphragm and out of view . Lung volumes are slightly improved from prior . Increased bilateral alveolar opacities . Retrocardiac consolidation appears similar .
    OUTPUT:
    
1 . ET tube and NG tube in expected position . 2 . Worsening bilateral alveolar opacities could reflect worsening pulmonary edema , multifocal pneumonia or ARDS . 3 . Retrocardiac consolidation with air bronchograms could reflect atelectasis or pneumonia