Cancer cells often use lymph vessels as pathways to other parts of the body, where they continue to divide. Why does this characteristic make cancer especially dangerous?

While the cancerous tumour is still walled in by the basal membrane in diagram C, the tumour breaks through the membrane in diagram D. At this stage, the tumour may spread to other parts of the body. Cancer cells often use lymph vessels as pathways to other parts of the body, where they continue to divide. e) Why does this characteristic make cancer especially dangerous?