Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates small residual right - sided pleural effusion with a small streak of linear atelectasis in the right perihilar region . The cardiomediastinal and hilar contours are unremarkable . There is no pneumothorax .
    OUTPUT:
    
No pneumothorax . Small residual right - sided pleural effusion .