Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . The aorta is heavily calcified and heart is top - normal in size . No evidence of pneumonia , pulmonary edema , or pleural effusions . A calcified right breast implant and thoracic scoliosis is unchanged in appearance from ___ .
    OUTPUT:
    
No evidence of primary lung malignancy within the limits of conventional chest radiography .