Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . There is a small right - sided pleural effusion . Right basilar opacity may be due to atelectasis noting infection can not be entirely excluded . Elsewhere , the lungs are clear . Cardiomediastinal silhouette is within normal limits . No acute osseous abnormality is detected .
    OUTPUT:
    
Small right - sided pleural effusion . Right basilar opacity may be due to atelectasis noting that infection would be difficult to exclude . CT would be more sensitive for the detection of metastatic disease .