Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest were acquired . The lungs are hyperexpanded , likely related to body habitus , as there is no flattening of the hemidiaphragms or increase in the retrosternal airspace to suggest obstructive pulmonary disease . The heart size is normal . The mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen .
    OUTPUT:
    
No acute cardiac or pulmonary process .