Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Unchanged left hemidiaphragm elevation . Scattered left lower lung opacities are similar compared to prior . Moderate left pleural effusion is unchanged . A left chest tube is unchanged in position . The right lung is fully expanded and clear . The right cardiomediastinal hilar silhouette is unremarkable .
    OUTPUT:
    
Unchanged moderate left pleural effusion .