Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest radiograph was obtained . The lungs are well expanded . Right pleural effusion is suggested on the frontal view . Otherwise there is no focal consolidation . Left costophrenic angle is excluded from view . There is no pneumothorax . The heart is normal in size with normal mediastinal contours .
    OUTPUT:
    
Small right pleural effusion .