Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable semi upright view of the chest . Lung volumes are low limiting assessment . There is increased bibasilar atelectasis and bronchovascular crowding . Overall cardiomediastinal silhouette is unchanged . The right upper extremity access PICC line appears in unchanged position extending to the level of the cavoatrial junction . Mild congestion is difficult to exclude in the correct clinical setting . No overt signs of edema .
    OUTPUT:
    
Increasing bibasilar atelectasis . Possible mild pulmonary vascular congestion .