Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tip of a left - sided PICC line ends in the low SVC . The lungs are clear . There is no pneumothorax . The heart and mediastinum are within normal limits . The patient has had prior cervical spine fusion .
    OUTPUT:
    
No radiographic evidence of pneumonia . However , if clinical suspicion persists , a chest CT may be performed for further evaluation .