Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . The lung volumes are low , which causes crowding of the bronchovascular structures but no overt pulmonary edema is seen . Aside from minimal left lower lobe atelectasis , lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . No acute osseous abnormalities are detected .
    OUTPUT:
    
No acute cardiopulmonary process .