Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a large left pleural effusion . No evidence of displaced rib fractures . If there is high clinical concern for rib fractures , consider dedicated rib series . Cardiomediastinal silhouette and hila appear normal . There is no pneumothorax .
    OUTPUT:
    
Large left pleural effusion , new since ___ . Underlying consolidation can not be excluded and non-urgent CT might be considered .