Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal consolidation is seen . There is no large pleural effusion or pneumothorax . Prominence of the superior mediastinum may relate to supine position and AP technique along with low lung volumes , however , there is clinical concern for acute mediastinal injury , contrast - enhanced chest CT would be the study of choice . The cardiac silhouette appears top - normal to mildly enlarged , likely exaggerated by low lung volumes , supine position , and AP technique . No displaced fracture identified .
    OUTPUT:
    
Prominence of the superior mediastinum may relate to supine position and AP technique along with low lung volumes , however , if there is clinical concern for acute mediastinal injury , CT is more sensitive . No focal consolidation .