Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . There is mild calcification of the aortic arch which is stable . There is prominence of the right main pulmonary artery , unchanged . The cardiomediastinal and hilar contours are stable . Again , mild streaky opacities in the right upper lung are likely related to prior radiation therapy are unchanged . A right lung lucency is consistent with prior right mastectomy and is also unchanged . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality .