Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal portable view of the chest was performed . The lungs are clear and better expanded on this study . There is no pleural effusion , pneumothorax or focal airspace consolidation . The cardiac silhouette is normal in size . Tortuosity of the thoracic aorta is redemonstrated . The hilar structures and pleural surfaces are normal . Left rib deformities are again appreciated in the upper chest .
    OUTPUT:
    
No acute cardiopulmonary process .