Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Previously seen small - to - moderate left pleural effusion has decreased in size and now there is a small left pleural effusion . There is also a tiny right pleural effusion which is similar to prior study . No focal consolidation , or pneumothorax . The cardiomediastinal and hilar contours are normal .
    OUTPUT:
    
Decrease in left pleural effusion , now small . Unchanged tiny right pleural effusion .