Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Lung volumes are low which limits assessment . An area of scarring on CT C - spine in the left upper lung is not clearly visualized . Pulmonary hilar prominence may reflect mild hilar congestion . There is no overt pulmonary edema or large consolidation , effusion or pneumothorax . The heart size appears grossly stable . Mediastinal contour is unchanged . Bony structures appear intact . No acute displaced rib fractures seen .
    OUTPUT:
    
Mild hilar congestion . No fracture or signs of traumatic injury .