E-ISSN 2587-0831
Review
Paradigm Shift From Halstedian Radical Mastectomy to Personalized Medicine
1 Department of General Surgery, İstanbul University İstanbul Faculty of Medicine, İstanbul, Turkey  
Eur J Breast Health 2017; 13: 50-53
DOI: 10.5152/tjbh.2017.312017
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Key Words: Breast cancer, individualized medicine, over diagnosis, over treatment, molecular subtype, genetic profiling
Abstract

Breast cancer management changed from radical mastectomy to precision medicine in a period longer than a century. The aims of these changes were to refrain from overdiagnoses and overtreatments as well as their harmful side effects and extra costs.  Breast cancer is a heterogeneous disease and characterized by many morphological, clinical and molecular features.  We now increasingly realise that a one-size-fits-all strategy does not apply to all breast cancer patients. Personalized medicine may be used for breast cancer screening, diagnosis and treatment. Individualized screening can decrease the number of unnecessary mammograms, additional radiologic studies, breast biopsies and false positivity rates. However, additional 15 to 20 years are necessary to reach the results of prospective randomized trials comparing low-risk and normal-risk women.  We also should wait for outcomes of risk-based screening trials. The rates of overtreatment in patients with early-stage breast cancer have reached 40% in many studies. Personalized treatment has succeeded in reducing it substantially by using tumour genetic profiling and tumour receptors in early breast cancer patients.  However, it has its limits and it is impossible to generalize it to all patients. New biomarkers and molecular classifications have also led to the development of novel therapies and treatment strategies. And, they can contribute to a more personalized management of breast cancer patients.

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