Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low , resulting in vascular crowding . However , there is no focal airspace consolidation to suggest pneumonia . The heart size is top normal . The aorta is tortuous but the mediastinal contours are unremarkable . There is no pleural effusion or pneumothorax . Noted is partially imaged cervical hardware .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .