Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . There is a small left pleural effusion , new from prior exam . There is no right pleural effusion . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
New small left pleural effusion . Otherwise unremarkable exam .