Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Heart size and cardiomediastinal contours are normal . Symmetric nodular densities over the lower lungs are similar to prior and consistent with nipple shadows . Saber sheath configuration of trachea and hyperinflated lungs suggest COPD . There is small atelectasis or fluid in the right major fissure . There is mild bibasilar atelectasis but no focal consolidation , pleural effusion , or pneumothorax .
    OUTPUT:
    
1 . Small atelectasis or fluid in the right major fissure . No focal consolidation . 2 . Probable COPD .