Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A central venous catheter terminates in the right atrium , as before . The cardiac , mediastinal and hilar contours appear unchanged . Patchy opacity along the left hemidiaphragm suggests minor atelectasis . The right mid lung opacity has resolved . Post-traumatic changes along the distal right clavicle appears similar .
    OUTPUT:
    
No evidence of acute disease .