Carcinoma of the breast is the most common malignancy of women globally and the incidence has more risen in recent years. The current study was conducted with the objective of assessing estrogen receptor (ER) and progesterone receptor (PR) reactivity patterns of mammary cancers and to evaluate their association with clinicopathological features. A total of 61 cases of breast carcinoma were examined retrospectively using immunostains for estrogen receptor (ER) and progesterone receptor (PR). Staining pattern and intensity were correlated with histological subtypes and nuclear grades of tumors. The left breast was more commonly involved (57%) and tumor size ranged from 0.5-13.0cm. The predominant morphology was infiltrating ductal carcinoma (85.3%). The majority of the cases presented as grade II (55.3%) lesions with tumor necrosis (70%) and lymph node involvement (71.3%(. Positive nuclear staining for ER and PR was observed in 70.5% and 57.5% of invasive carcinomas, respectively. In ER+ cases, fifty five cases (90%) gave diffuse immunohistochemical reaction for ER; In the remaining 10%, a focal ER reaction was seen. In PR+ cases, 49 cases (80%) gave diffuse immunohistochemical reaction for PR and In remaining 20% of PR+ tumors, the reaction was heterogeneous. In ductal infiltrative carcinomas the percentage of cases showed ER+ nuclear labeling is higher than those in cases of infiltrative lobular carcinomas. Assessment of ER and PR as prognostic markers for the clinical management of breast cancer patients is strongly advocated to provide best therapeutic options.
Keywords: Breast cancer; Estrogen receptor (ER); Progesterone receptor; Immunohistochemical reaction; Prognostic markers
Copyright © 2018 by The American Society for BioMedicine and BM-Publisher, Inc.
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American Journal of BioMedicine Volume 6, Issue 8, pages 276-288
Received January 30, 2016; Accepted June 25, 2016; Published August 08, 2016
How to cite this article
AI-Timimi A,Yousi NG. Immunohistochemical determination of estrogen and progesterone receptors in breast cancer: pathological correlation and prognostic indicators. American Journal of BioMedicine 2016;4(3):265-275
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