Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube tip 4 cm above carina . Worsened bibasilar opacities , atelectasis versus pneumonitis . Shallow inspiration accentuates heart size . Normal pulmonary vascularity . No pneumothorax . No pleural effusion .
    OUTPUT:
    
Mildly worsened bibasilar opacities , atelectasis versus pneumonitis .