Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate similar lung volumes , without focal consolidation , pleural effusion or pneumothorax . The cardiac silhouette and mediastinal contours are unchanged . Pulmonary vasculature appears normal . Note is made of pectus excavatum and S - shaped scoliosis of the thoracic spine . Wedge deformity of T11 is unchanged .
    OUTPUT:
    
No acute chest abnormality .