Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Pulmonary vasculature is normal . Lungs remain hyperinflated with emphysematous changes again seen , most pronounced at the lung apices . No focal consolidation is demonstrated . Known nodular opacities seen within the lungs on prior CT are not clearly delineated on the current exam . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process . Emphysema . Known nodular opacities within the lungs are better delineated on prior CT .