Comparison of the effects of clinicopathological and radiological findings on survival in women younger than 40 years and ≥ 55 years of age with breast cancer

Objective: Tumors of women with breast cancer show clinical and biological differences depending on the hormonal changes that develop with age. Therefore, in this study, we compared the radiologic, and clinicopathological features of breast cancer patient’s < 40 age and ≥55 age. Material and Methods: The files of a total of 759 patients, including 92 patients under 40 aged, and 322 patients 55 aged and over who were operated on for breast cancer over a 10-year period, were retrospectively reviewed and Estrojen Reseptor (ER), Progesteron Reseptor (PR), Human epidermal growth factor receptor 2 (HER2), Lymphovascular invasion (LVI) status, presence of axillary lymph node metastasis (ALNM), multifocality, presence of Ductal Carsinoma İnsitu (DCIS) or Lobular Carsinoma İnsitu (LCIS), tumor size, tumor histopathological type, grade, and score were recorded. Results: In patients under the age of 40, the tumor is less localized in the upper-inner and lower-inner quadrants of the breast, multifocality is more common, most of them have dense breast structure, the histological grade of the tumor is higher, LVI and LNM are more common. It was found that they had ER receptor positivity and higher Ki-67 proliferation index (p