Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to ___ , there is no significant change in the appearance of the Port - A - Cath . The tip of the port is located in the lower SVC . The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unchanged .
    OUTPUT:
    
Port tip is located in the lower SVC . Otherwise unchanged compared to ___ .