Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate a right chest wall port with the catheter terminating at the approximate cavoatrial junction . No pneumothorax is seen . There is a asymmetric opacity in the left middle lung field which may be due to post-radiation changes . However , if symptoms are present , concurrent pneumonia is possible . There is no pleural effusion . The cardiac contour is top normal . The mediastinal contour is normal .
    OUTPUT:
    
Satisfactory positioning of right chest wall Port - A - Cath with the tip terminating at the approximate cavoatrial junction . Opacity in the left middle lung field which likely represents post radiation changes , however concurrent pneumonia is possible if symptoms exist .