Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable supine frontal chest radiograph was obtained . There has been slight interval improvement in the degree of opacification of a right upper lobe pulmonary contusion . Several smaller bilateral contusions are also noted . There is no new consolidation , effusion , or pneumothorax . Endotracheal tube remains in the upper airway . An enteric catheter loops in the stomach and extends below the field of view . Two right and two left chest tubes are unchanged . Mediastinal drain and median sternotomy wires are stable . Extensive vascular surgical clips are seen overlying the right upper chest .
    OUTPUT:
    
Interval decrease in size of right upper lung contusion .