Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP view of the chest provided . As compared to prior study from 2 days ago , degree of pulmonary edema has significantly improved , with only a small basilar residual component . There is no large pleural effusion . Moderate cardiomegaly is stable . Old healed posterior 5th rib fracture should not be mistaken for a lung nodule .
    OUTPUT:
    
Significant improvement in pulmonary edema .