Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , particularly on the frontal view . Otherwise , the lungs are clear . No pleural effusion , pneumothorax or focal airspace consolidation . Heart is normal size . No pulmonary edema . Mediastinal and hilar contours are unremarkable . Incidental note is made of carotid artery calcifications .
    OUTPUT:
    
No acute cardiopulmonary process .