Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Avenous stent is again seen unchanged in position . A moderate left pleural effusion is slightly smaller in size and the left basal atelectasis is also slightly decreased from the prior examination . The previously seen right pleural effusion has resolved . The lungs are otherwise clear . The cardiomediastinal and hilar contours are unchanged .
    OUTPUT:
    
Moderate left pleural effusion again seen , slightly smaller in size .