Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is worsening of the left pleural effusion since prior exam . There is no right pleural effusion . There is a persistent small apical right pneumothorax . The lungs are otherwise clear , though there are low lung volumes . Cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
Worsened left pleural effusion . Persistent small right apical pneumothorax .