Abiopsy reveals that a woman who has had breast cancer now has cancer in her lymph nodes. the process of cancer spreading from one organ or body area to others is

Metastasis is the process of spreading cancer where the it spreads from one organ to another area of organ in the body. The cancer cells would break away from its original growth and move to other sites to grow tumors. However, this is not only limited to cancer. It can also happen with other diseases.

Anxiety, stress, or something like that