Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The initial radiograph from ___ hr shows acute worsening of extensive bilateral airspace opacities . The left subclavian central venous catheter terminates at the superior cavoatrial junction . There is no pneumothorax . Mild cardiac enlargement is unchanged . The followup radiograph from ___ hr shows improved airspace opacities following intubation . The new ET tube is slightly high - riding . Advancement by 2 - 3 cm is suggested for more optimal ventilation . In addition , a new nasogastric tube enters the stomach , but it s side port is at the GE junction . Advancement by 5 cm is advised .
    OUTPUT:
    
Initially worsening bilateral airspace opacities have improved following intubation . The rapid change may be due to severe pulmonary edema , pulmonary hemorrhage , or drug reaction .