Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without consolidation or edema . There is no pleural effusion or pneumothorax . There is a 9 mm rounded density in the right lower lung zone which is most likely the nipple , although an underlying nodule can not be excluded . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
Small rounded right lower lung density is most likely the nipple , although a small pulmonary nodule can not be excluded . Recommend repeat chest radiographs with nipple markers .