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Breast cancer is a serious health problem. It is the most common cancer in women. The aim of this study was to estimate the concordance between ER, PR receptor and HER-2 immunohistochemistry assessment scores in pared CNB (core needle biopsy) and surgical specimens. Histological grade, oestrogen receptor (ER) status, progesterone receptor (PR) status, and human epidermal growth factor receptor-2 (HER2) status were evaluated in a blinded fashion in CNB and in surgical excision specimens. Absolute concordance rate between core needle biopsies and surgical specimens for histological grade was 50% with κ value (0,15) for ER 92% with κ value (0,79), PR 88% with κ value (0,73) and for HER2 96% with κ value (0,91). CNB can provide reliable information in evaluation of ER, PR and HER2 status in an invasive breast carcinoma. Ključne reči: breast cancer, core needle biopsy, oestrogen receptors, progesterone receptors, HER-2. Analiza odstupanja statusa hormonskih receptora i receptora za epidermalni faktor rasta 2 u uzorcima dobijenim iglenom biopsijom i hirurškim uzorkom kod obolelih od invazivnog karcinoma dojke Ljiljana Tadic Latinovic1, Zivka Eri2, Darko Jovic3, Aleksandra Salapura1, Jovan Culum3, Branislava Jakovljevic3, Ilija Baros1, Slavica Maric4 1 Department of Pathology, University Clinical Center of Republic of Srpska, Banja Luka, Republic of Srpska, Bosnia and Herzegovina 2 Canter for Molecular Genetics, Institute for Pulmonary Diseases, Sremska Kamenica, Republic of Serbia 3 Surgical Clinic “S-Tetik”, Banja Luka, Republic of Srpska, Bosnia and Herzegovina 4 International Medical CantersCentar za Radioterapiju Banja Luka, Banja Luka, Republic of Srpska, Bosnia and Herzegovina

materia medica

Analysis of discrepancies of core needle biopsy and surgical specimens for accurate evaluation of hormonal receptors and epidermal growth factor receptor 2 status of invasive breast cancer patients