Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the immediate prior chest radiograph , pulmonary vascular congestion and mild pulmonary edema have improved . Moderate cardiomegaly is unchanged . There is crowding of the infrahilar vessels , compatible with atelectasis , improved compared with a ___ . A left hemidiaphragm is not distinctly visible . Blunting of the posterior costophrenic angle is consistent with a small amount of pleural fluid and / or thickening . There is no gross pleural effusion and no pneumothorax , or focal consolidation . Background COPD again noted . The cardiomediastinal contour is stable including cardiomegaly and mild prominence of the pulmonary arteries suggesting pulmonary arterial hypertension . Biapical pleural - parenchymal scarring is similar to the recent prior chest CT .
    OUTPUT:
    
1 . Interval improvement in pulmonary vascular congestion and mild pulmonary edema . 2 . Small residual pleural fluid and / or thickening and left infrahilar atelectasis again noted . 3 . Hyperexpansion suggesting COPD . 4 . No focal consolidation