Introduction. Early detection of breast cancer in women at high risk will improve prognosis and survival. Mammography is considered key within a comprehensive surveillance approach. Consider and identify women with high-risk factors who are more likely to develop breast cancer. Early initiation of screening, between 25 and 30 years of age. Mammography should be performed annually or biannually, depending on the level of risk, complemented by ultrasound and magnetic resonance imaging and biopsy to confirm the diagnosis.

Objective. To describe the methodology used for the early detection and diagnosis of breast cancer in high-risk women using mammography.

Material and methods. Quantitative, descriptive, prospective and correlational study. The sample involved 56 adult women, selected by convenience sampling, from a clinic in Cuernavaca. Data collection was carried out through telephone interviews, using a structured instrument with sociodemographic variables, personal history, and mammography results. The data were processed in Excel and analyzed with SPSS v. 22, applying measures of central tendency and percentages. Informed consent was granted, and institutional approval was granted, in accordance with the General Health Law.

 Results. The participants 56 women, most of them married 46.7%, The age groups of 50 to 59 years 38%. Schooling: secondary 42%. They have 2 to 7 children, the highest percentage of 2 to 3 children, 47%. A third perform breast self-examination. By mammogram, 8% have a medium and high probability of breast cancer.

Conclusions. The results of this study may be helpful in promoting breast cancer screening