Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP semi-upright views of the chest were obtained . Cardiomediastinal silhouette is unchanged . Chronic bibasilar opacities more severe on the right have slightly increased , likely representing worsening atelectasis ; however , underlying consolidation is not excluded . Lungs are otherwise clear . Small bilateral pleural effusions are unchanged . No pneumothorax .
    OUTPUT:
    
Slightly increased opacification at the right base is probably related to worsening atelectasis as chronically seen in that region ; however , developing consolidation can not be excluded .