Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiographs were obtained . The lung volumes are decreased . The lungs are clear . There is no focal consolidation , effusion , or pneumothorax . The heart size is exagerrated by AP technique and low lung volumes . Cardiac and mediastinal contours are normal .
    OUTPUT:
    
No acute cardiopulmonary process