Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable upright chest radiograph was obtained . Since the chest radiograph 7 days ago , moderate pulmonary edema has improved . Opacity seen throughout the lungs , in particular in the right upper lobe were better assessed on CT in ___ at which point the possibility of recurrent infection such as reactivation tuberculosis was considered . A retrocardiac opacity is similar to ___ . Cardiomegaly is unchanged .
    OUTPUT:
    
Improvement in mild pulmonary edema . Repeat radiographs after treatment are recommended to re-assess chronic parenchymal changes .