Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . The heart is top - normal . There is a small right pleural effusion . Right lower lung opacity adjacent to the effusion may represent atelectasis however infection should be considered in the appropriate setting . No pneumothorax . The left lung is clear .
    OUTPUT:
    
Small right pleural effusion and adjacent pulmonary opacity could represent atelectasis or infection in the appropriate setting .