International Journal of Research and Review Vol.7; Issue: 6; June 2020 Website: www.ijrrjournal.com Original Research Article E-ISSN: 2349-9788; P-ISSN: 2454-2237 International Journal of Research and Review (ijrrjournal.com) 67 Vol.7; Issue: 6; June 2020 Estrogen and Progesterone Receptor Expression in Surface Epithelial Ovarian Tumors and Their Clinicopathological Correlation: A Cross-Sectional Study in Tertiary Care Hospital of Northern India Aarti Dhatwalia 1 , Rajni Kaushik 2 , Anchana Gulati 3 , Rajeev Sood 4 , Vineet Kumar 5 1 Junior Resident, Department of Pathology, IGMC Shimla, Himachal Pradesh. 2 Professor and Head, Department of Pathology, Dr YSPGMC Nahan, Himachal Pradesh. 3 Associate Professor, Department of Pathology, IGMC Shimla, Himachal Pradesh. 4 Professor, Department of Obstetrics and Gynecology, KNH Shimla, Himachal Pradesh. 5 OSD, Directorate of Health Services, Shimla, Himachal Pradesh. Corresponding Author: Rajni Kaushik ABSTRACT Background: Ovarian tumors pose major health problem among women worldwide. Ovaries being a source of estrogen and progesterone are also the targets for these hormones. Therefore, Estrogen and Progesterone receptors are considered to be involved in the ovarian carcinogenesis. Aim: To study ER, PR expression in surface epithelial ovarian tumors and their clinicopathological correlation. Methods: The present study was conducted on 50 cases of ovarian tumors, 31 benign and 19 malignant. Estrogen and progesterone expression was studied by immunohistochemistry and correlated with various clinicopathological parameters such as, menopausal status, histological type, WHO grade and FIGO stage. Results: In total, ER expression was seen in 22 (44%) and PR expression was seen in 19 (38%) cases. Out of 50 cases, 26 (52%) were ER, PR negative, 17 (34%) were ER, PR positive, 10% were ER positive, PR negative and 4% were PR positive, ER negative. There was a statistically significant ER expression in malignant tumors (p value <0.05) in comparison to benign and borderline tumors. Among histological type, ER, PR expression was higher in serous and high grade tumors which was statistically significant (p value <0.05). No significant association was found among ER, PR expression and age, menopausal status, grade and FIGO stage. Therefore, identification of these biological prognostic markers can help to select patients for endocrine therapy and to improve treatment planning. Key words: Estrogen Receptor, Progesterone Receptor, Ovarian tumors, Immunohisto- chemistry, FIGO stage. INTRODUCTION Ovarian tumours are one of the major health problems among women globally. [1] A female at any time in her life has 6-7% risk of ovarian tumor, 1.5% risk of ovarian cancer and 1% mortality due to ovarian cancer. [2] Increasing age, early menarche, late menopause, nulliparity and delayed child bearing are associated with increased risk of ovarian cancer. [3] Cytosolic oestrogen and progesterone receptors are present in many organs including the breasts, endometrium, myometrium, cervix, fallopian tubes and ovaries. The ovaries in addition to being a source of estrogens and progesterone are also the targets for these hormones. [4] Since patients with similar clinicopathological characteristics experience different clinical outcome [5] therefore identification of biological factors (Estrogen and