Abstract
Perfecting screening tests of breast cancer by introducing digital mammography has increased findings the initial stages of the growth (neoplasma) in situ up to 25% of all detected cases of breast cancer. It has lead to 98% of surgical or combined forms of treatment although the risk of the advance into intrusive cancer is observed only in 50% to 75% of patients. In this connection the search for the prognosis marker and the degree of the radicalism of the treatment of such patients is the most discussed questions on clinic forums. This article discusses the re-thinking of the problem of the initial stages of breast cancer and working-out the best possible approach to its treatment.