Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Status post gastric pull - up with widening of the mediastinal contours unchanged since scout ___ . Peripheral right lower lobe opacity has improved since the prior examination . There is persistent ill - defined opacity in the costophrenic angle although much improved . No acute airspace or interstitial opacity . Pneumothorax or pleural effusions .
    OUTPUT:
    
Right lower lobe opacity has improved since ___ . No acute pneumonia or edema .