Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are within normal limits . The heart is not enlarged . The mediastinal contours are within normal limits . No CHF , consolidation , pleural effusion or pneumothorax . No subdiaphragmatic free air identified . Osseous structures are grossly unremarkable .
    OUTPUT:
    
No acute pulmonary process identified .