Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are normal . Pulmonary vascularity is normal . 9 mm nodular opacity projecting over the right 2nd rib anteriorly is unchanged . Lungs are clear otherwise without focal consolidation . No pleural effusion or pneumothorax is present . No acute osseous abnormalities are visualized .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Unchanged 9 mm nodular opacity projecting over the right 2nd rib anteriorly .