Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Compared to prior study , there is less elevation of the right hemidiaphragm and improved aeration . No definite focal consolidation , with mild bibasilar atelectasis noted . No pulmonary edema . There is possible trace left pleural effusion . No pneumothorax . Cardiomediastinal and hilar contours are stable . Previously seen right paratracheal lymphadenopathy is again noted , and better appreciated on prior chest CT .
    OUTPUT:
    
Possible trace left pleural effusion . No definite consolidations or pulmonary edema .