关键词: 乳腺X 线, 青年乳腺癌, 应用价值

Abstract: ［Abstract］ Objective To explore the value of mammography in young breast cancer. Methods The results of mammography from newly diagnosed young breast cancer patients at Peking University Shenzhen Hospital from January 2011 to December 2016，were read and reviewed by a specialist. All patients were divided in subgroups according to mammary gland density， TNM stage， and immunophenotype. Results A total of 198 eligible subjects were collected. According to the density of the breast，180 cases were C?type breast and 18 were D?type. The difference of positive rate of different density breast was statistically significant. The 0，I，II，II，III and IV cases were divided into 2 cases， 47 cases，103 cases，39 cases and 7 cases respectively. The positive rates of the cases in different TNM staging were statistically significant. According to the immunohistochemical results ，there were 17 cases， 106 cases，54 cases and 21 cases of luminal A，luminal B，triple?negative and HER? 2 overexpression types， respectively. There were no statistical differences between the positive rate of different immunophenotypic cases. Academic significance. There was no significant difference in the positive rate between 21 immunophenotyp cases. Conclusion Mammography examination has a high positive rate for young breast cancer. The positive rate of late clinical stage is high，and the positive rate of dense mammary gland is low. For dense breasts，digital breast tomosynthsis（DBT）can be added to improve the positive rate.

Key words: application value, young breast cancer, Mammography