Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The heart is mildly enlarged , similar to prior , with a stable cardiomediastinal contours . Volumes are low but the lungs are clear . No pleural effusion or pneumothorax . Catheter of a left chest wall port terminates within the right atrium .
    OUTPUT:
    
Left chest wall port catheter terminates in the right atrium . Mild cardiomegaly , similar to prior .