Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are somewhat low . The lungs are clear . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is top - normal in size with left ventricular configuration of the heart and mild tortuosity of the thoracic aorta .
    OUTPUT:
    
No acute cardiopulmonary process .