Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right internal jugular venous catheter terminates in low SVC . Lung volume remains low . Left pleural effusion is small . Left lower lobe aeration is improved . Bibasilar opacities are likely secondary to atelectasis . Sternotomy wires are intact . Cardiomediastinal silhouette has normal postop appearance .
    OUTPUT:
    
Small left pleural effusion is stable .