Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Quality of the images is very limited due to underpenetration likely owing to body habitus . The lungs are poorly inflated , but there are no focal opacities . Cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary process although study limited by underpenetration .