Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Sengstaken - ___ tube extends past the esophagus and stomach with tip projecting over the lower abdomen . Heart size is normal . Widening of the mediastinum is increased compared to the prior examination and there has been intervally increased vascular congestion and mild interstitial edema . There is worsening right upper lobe atelectasis . .
    OUTPUT:
    
Interval increase in the previously noted widened mediastinum which may be in relation to the new central edema . CT may be helpful for further characterization if indicated . Worsening right upper lobe atelectasis .