The article presents data on the results of preventive examination of patients with diagnosed breast cancer at the level of primary health care, using self-examination and ultrasound. The survey was conducted in 7551 women of Tashkent city and Tashkent region aged 19 to 70 years. Based on the clinical examination and ultrasound examination, 80 (1.1%) patients were diagnosed with breast cancer. Of the 80 patients with breast cancer, 3 (3.75%) had cancer in situ and in 29 (36.25%) T 1 N 0 M 0 was detected. In more than 20% of cases, it was possible to carry out organ-preserving treatment.