Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is moderate pulmonary vascular congestion and interstitial edema . A right lower lobe opacity is new since prior study and could be infectious in etiology . The heart remains moderately enlarged . A small right pleural effusion is present . There is no pneumothorax .
    OUTPUT:
    
1 . Moderate pulmonary vascular congestion and interstitial edema . 2 . Right lower lobe opacity may be infectious in etiology . Recommend repeat chest radiograph following treatment to assess for resolution and distinguish heart failure from infectious process .