It has come to the knowledge from a new study, the breast cancer tumors that till now have not spread do contain cells, those are having tendencies to migrate to new tissue. This, on the other hand, reveals that just because a cancer has not yet spread doesn\'t mean its cells lack the ability or inclination to do so, to the decision of the researchers at the Salk Institute for Biological Studies in La Jolla, Calif.

To them, in addition, there is no such evidence regarding the display of relationship of these cells with a positive or negative health outcome for women with breast cancer. In this respect it should be accepted, that the availability of the processes of self-screening for breast cancer, regular doctor\'s visits and mammograms have all made it possible to identify breast cancer tumors in their early stages. With the detection at the early stage, the cancer cells are found to remain confined within the milk duct, the most common origin of breast cancer tumors. Exclusion of the small tumor and surrounding tissue, is known as lumpectomy, and happens to be the usual treatment for this early stage of breast cancer.

Now there has always been a debate on whether women should also have radiation treatment to address any stray cancer cells, since a steady return of cancer among16 percent of these patients within five years is confirmed.

The study was conducted by the eminent team of researchers in the lab by the process of letting the breast tissue to grow under observation. The next approach was by depending on series of chemical signals, called the ERK1/2 MAP kinase pathway, that remains often active during tumor growth. The aggressive tendency and subsequent growth of the cells was witnessed afterwards. To the researchers, the next step would be to identify biological markers for the diagnosis of patients who are at higher risk of metastasis.