Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is round consolidation in the right lower lung . There is a small right pleural effusion . Pulmonary vascular congestion is mild . There may be trace interstitial edema . Retrocardiac opacity is dense and silhouettes the left hemidiaphragm . Streaky opacities in the lower left lung may represent atelectasis . There is no pneumothorax within the limitations of a single portable view . The cardiomediastinal silhouette is normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
1 . Right lower lung pneumonia or aspiration . 2 . Retrocardiac opacity which may represent pneumonia , aspiration , atelectasis , or a combination of these .