Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior study from ___ , there is increased vascular congestion at the hila with no discernible interstitial opacities or upper zone distribution , however bilateral basilar opacities and retrocardiac opacity is increased , and may simply represent atelectasis . Previously noted hiatal hernia is no longer seen . No pleural effusion or pneumothorax .
    OUTPUT:
    
Interval increase in pulmonary vascular caliber at the hila with no pleural effusions or signs of pulmonary edema . This raises the concern for pulmonary embolism in the appropriate setting .