Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The previously moderate left pleural effusion has improved , and is now small . There is no right - sided effusion . Pulmonary edema and pulmonary vascular congestion have resolved . There is stable cardiomegaly . A stent projects over the aortic outflow tract in unchanged position . There is no focal consolidation or pneumothorax .
    OUTPUT:
    
Small left pleural effusion , improved .