Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are provided . There is a small left pleural effusion . The effusion appears slightly increased from prior exam . No pneumothorax . Cardiomediastinal silhouette is normal . Right lung remains clear . No metallic foreign bodies are seen .
    OUTPUT:
    
Small , intervally increased left pleural effusion .