Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . There is no pleural effusion or pneumothorax . Projecting over the right lower lung is a possible lung nodule suggested by a nodular focus measuring about 7 mm in diameter .
    OUTPUT:
    
No evidence of acute disease or injury . Possible nodule in the right lower lung . If clinically appropriate , the chest could be evaluated with CT or alternatively short - term followup radiographs .