Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior radiographs on ___ , there is increased aeration at the left lung base , with persistent retrocardiac opacity and elevation of the left hemidiaphragm , and unchanged left pleural effusion . The right lung is clear . There is no new focal consolidation . There is no pneumothorax or edema . Cardiomediastinal silhouette is unchanged . A left - sided PICC line terminates in the lower SVC . Again seen is a right - sided tube crossing the right hemithorax and terminating above the carina . Patient is status post tracheostomy .
    OUTPUT:
    
Persistent retrocardiac opacity and elevation of left hemidiaphragm suggestive of left lower lobe volume loss and left pleural effusion . No new focal consolidation .