ECP 2023 Final Programme

E-Posters 116 E-PS-02 038 Unexpected finding in a long lasting sclerosed fibroadenoma – multiple foci of high grade invasive ductal carcinoma: a case report Andreja Klevišar Ivancic, Slovenia R. Eržen Jakšič, R. Petrič, G. Gasljevic 039 Study of CD 163 expression in breast cancer tissue Olena Kolomiiets, Ukraine R. Moskalenko 040 Heterogeneity of Her2-positive and triple negative breast cancer subtypes in primary tumour and local metastasis Konstantin Konyshev, Russia S. Sazonov 041 Evaluation of tonsil as tissue control for immunohistochemical demonstration of estrogen receptor Heidi Lykke Kristoffersen, Denmark R. Røge, S. Nielsen 042 Clinicopathological features of male breast cancer: a single institution experience Ho-Chang Lee, Korea O. Lee, S. Son, C. Woo 043 Clinicopathological characteristics and prognostic analysis of fibrotic focus in HER2-negative breast cancer Yueping Liu, China M. Yue, S. Wu 044 Tumour mutation burden and infiltrating immune cell subtypes influenced the breast cancer prognosis Yueping Liu, China J. Li, H. Liu 045 Histopathological H&E-based evaluation of HER2 status in breast cancer through a novel deep learning approach Carmelo Lupo, Italy N. Casatta, G. Gerard, G. Cervi, A. Polonia, N. Fusco, G. Curigliano, C. Eloy 046 Characterization of EGFR expression in low estrogen receptor positive breast carcinoma Amal Maaoui, Tunisia Y. Houcine, S. Elfekih, S. Kamoun, S. Ayadi, M. Driss 047 Precursor lesions and biomarker profile of mucinous breast carcinoma Feng Mengna, China Y. Zhang, L. Yang, M. Shen, F. Li, B. Wei, H. Bu, Z. Zhang 049 A semiquantitative study of neuroendocrine differentiation on the breast cancer subtypes Yoshiro Otsuki, Japan S. Ohtsuka, Y. Asano, T. Ikeya, Y. Ishida, S. Sezaki, H. Kobayashi 050 Breast prognostic markers – three-year institutional experience and comparison with published benchmarks Daniela Proca, USA Y. Belogrivtseva, I. Mazur 051 Primary neuroendocrine tumour of breast: a case report of a rare neoplasm Ioannis Provatas, Greece P. Pantoula, D. Mylonaki, S. Efthymiou, A. Karakosta 053 Core needle biopsy diagnosis of fibroepithe- lial lesions of the breast and the upgrade rate in the surgical specimen: experience of an oncology hospital Sara Reis, Portugal N. Castelo-Branco, P. Figueiredo 054 Morphological stability of HER-2 expression before and after breast carcinoma neoadju- vant chemotherapy Olga Reshetnikova, Russia L. Rudiuk, A. Musatov 055 Breast carcinoma immunophenotype features after neoadjuvant therapy Olga Reshetnikova, Russia L. Rudiuk, A. Musatov