Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Right internal jugular central venous catheter has been removed . The heart size is normal . Mediastinal and hilar contours are unremarkable . The pulmonary vascularity is not engorged . Subsegmental atelectasis is noted within the right perihilar region . Lungs are otherwise clear . No focal consolidation , pleural effusion or pneumothorax is visualized . No acute osseous abnormalities seen . Previously described retrocardiac opacity is no longer present on the current exam .
    OUTPUT:
    
No acute cardiopulmonary abnormality .