Impact of size of the tumor, persistence of estrogen receptors, progesterone receptors, HER2neu receptors and Ki67 values on positivity of axillar lymph nodes at patients with early breast cancer with clinically negative axillar examination

Aim : The aim of the study was to identify factors that influence the positivity on axillar status at patients with early breast cancer with clinical negative axilla, at which were done radical surgery to breast but also radical lymphadenectomy of axillar lymph nodes. Material and methods : In the study were included 81 surgically treated patients with early breast cancer during 08-2015 to 05-2017 year. All the cases have been analyzed by standard histological analysis including macroscopic and microscopic analysis on standard H&E staining. For determining of molecular receptors immunostaining by PT LINK immunoperoxidase has been done for HER2neu, ER, PR, p53 and Ki67.    Results : Patients age ranged between 31-73 years, average of 56.86 years. The mean size of the primary tumor in the surgically treated patient was 20.33 + 6.0 mm. On dissection from the axilary pits there were taken out 5 to 32 lymph nodes, an average of 14. Metastases have been found in 1 to 7 lymph nodes, an average 0.7. In only 26 (32.1%) of the patients have been found metastases in the axillary lymph nodes. The univariant regression analysis showed that the size of tumor and presence of HER2 neu receptors on cancer cell influence on the positivity of the axillary lymph nodes. The presence of the estrogen receptors, progesterone receptors  showed that they do not have influence on the positivity for metastatic deposits in axillary lymph nodes. Multivariant model and logistic regression analysis as independent significant factors or predictors of positivity of the axillary lymph nodes is influenced from the tumor size only. Conclusion : Our study showed that the involving of the axillary lymph nodes is mainly influenced from the size of the tumor and presence of HER2neu receptors  in the univariant analysis points the important influence of positivity in the axillary lymph nodes but only size of the tumor in multivariate regressive analysis.