Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The heart is of normal size with normal cardiomediastinal contours . A rounded dense structure overlying the right lung base appears similar to prior studies dating back to at least ___ , and may represent costochondral calcification . No focal consolidation , pleural effusion , or pneumothorax . No radiopaque foreign body .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Rounded dense structure overlying the right lung base is similar to prior and may represent costochondral calcification .