Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison with chest radiograph from ___ , there is mild improvement in central pulmonary vascular congestion and pulmonary edema . Small right pleural effusion is unchanged . A Small right pleural scar is seen . There is no effusion on the left . There is no focal consolidation or pneumothorax . Mediastinal and hilar contours are stable . Substantial cardiomegaly is unchanged .
    OUTPUT:
    
1 . Mildly improved pulmonary edema . 2 . Unchanged small right pleural effusion .