Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi upright chest radiograph was obtained . Left jugular central venous catheter terminates in the distal SVC as before . Increased prominence of bronchovascular structures is likely related to decreased lung volumes . Persistent elevation of right hemidiaphragm is noted . There is no pneumothorax or pleural effusion . The heart is mildly and stably enlarged .
    OUTPUT:
    
Low lung volumes . Satisfactory position of the left IJ line .