Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . The heart size is normal . Mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is seen although the left costophrenic angle is excluded from the field of view . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .