Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities . Rounded 6 mm density projects over the right upper lung field between the right fourth and fifth posterior ribs which may be a calcified granuloma or perhaps be external to the patient .
    OUTPUT:
    
No acute cardiopulmonary abnormality .