Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small - to - moderate residual right - sided pleural effusion is seen , without evidence of pneumothorax . Trace left effusion may also be present . Heart is top normal in size with normal cardiomediastinal contours . Asymmetric opacification of the right base could be due to incomplete reexpansion .
    OUTPUT:
    
No pneumothorax and small - to - moderate residual right - sided pleural effusion .