In the field of treatments such as radiotherapy, anti-Her2 therapy or administration of hormonal block, the results were located in the ranges considered as bad or moderate (red and yellow scored card) in most of the municipalities selected according to the standard of measurement of the Consensus, Cali and Medellin presented the highest proportion of patients with carcinoma in situ who underwent breast-conserving surgery. The gene discussed is ERBB2; the disease is in situ carcinoma.