Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previously visualized right subpulmonic effusion has almost entirely resolved . There is a small small residual right pleural effusion . Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Lungs are clear . No pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Small residual right pleural effusion , but no evidence of pneumonia .