A study on correlation of histopathological grade with hormone receptor and HER2/neu status in invasive breast carcinoma at a tertiary care centre of Barak valley

Background: Breast carcinoma is the most common malignancy occurring in females worldwide while in India it is the 2nd most common malignancy occurring after cervical cancer in females. The treatment modalities and prognosis of breast carcinoma depend largely on their hormone receptors (estrogen and progesterone receptors) and human epidermal growth factor receptor 2 (HER2/neu) status. The aim of this study was to correlate the receptor status in invasive breast carcinoma with histopathological grading of the tumor.Methods: This is a retrospective study carried out in the department of pathology, Silchar medical college and hospital, Cachar from January 2019 to December 2020. A total of 69 cases were considered for the study, selected on the basis of inclusion and exclusion criteria. Histomorphology grading in invasive ductal breast carcinomas was done along with the status of estrogen receptor (ER), progesterone receptor (PR) and HER2/neu.Results: The present study comprised of total of 69 infiltrating breast carcinoma cases. Out of all 51% cases were found to be in 4th decade of life. The most common type found in the study was invasive ductal carcinoma (not otherwise specified) seen in 86.96% cases. Maximum 41.67% of cases were histologically classified as grade III. A positive correlation was found between histological grading and immunohistochemistry of hormone receptors (ER, PR) and HER2/neu status.Conclusions: From the present study, it can be concluded that there is a positive correlation between histopathological grade and hormone receptors status and HER2/neu.The estrogen receptor and progestrone receptor were found negative in high grade disease on histological evaluation. Triple negative breast carcinomas have poorer prognosis as they tend to be of high grade