Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The radiograph is relatively underpenetrated . Extremely low lung volumes . There is a left jugular central venous catheter with tip in the lower SVC . Mild cardiomegaly . The mediastinal and hilar contours are normal . Evaluation for edema is limited by low lung volumes . Lungs are clear . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality .