Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right base opacity is worrisome for pneumonia or aspiration . There is slight blunting of the right costophrenic angle which could be due to a trace pleural effusion . No pneumothorax is seen . The cardiac and mediastinal silhouettes are stable . Surgical clips are re - demonstrated over the right mediastinum / hilar region .
    OUTPUT:
    
Right base opacity is worrisome for pneumonia and / or aspiration .