Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are relatively low lung volumes . Mild prominence of the hila is stable . No focal consolidation is seen . There is no pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are stable and unremarkable . Aortic knob calcification is again seen . Stent is seen projecting over the upper abdomen .
    OUTPUT:
    
No acute cardiopulmonary process .