Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube tip is 5 cm above the carina , right internal jugular line tip is at mid SVC and orogastric tube ends in the stomach and are all appropriate . Since yesterday , pneumonia involving bilateral upper lobe is unchanged , whereas right lower lobe pneumonia show interval improved . Increased retrocardiac opacity reflecting either consolidation and / or combination of consolidation and atelectasis is significantly better . Heart size is normal . Mediastinal and hilar contours are unchanged .
    OUTPUT:
    
1 . Over last 24 hours , bilateral upper lobe pneumonia is unchanged , but improved in right lower lobe . 2 . Retrocardiac opacity likely consolidation and / or combination of consolidation and atelectasis is significantly better .