Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are extremely low . Crowding of the vasculature is likely due to the low lung volumes , rather than pulmonary edema . There is no focal consolidation , pleural effusion , or pneumothorax . The cardiomediastinal silhouette is normal . There is a displaced fracture through the surgical neck of the humerus , which is only evaluated in one AP view . No definite rib or spine fracture is visualized on this limited supine exam .
    OUTPUT:
    
1 . Displaced humeral neck fracture . 2 . Low lung volumes . No acute cardiopulmonary process or evidence of a rib fracture .