Araştırma Makalesi

Comparison of Tru-Cut and Surgical Biopsy Specimens in Breast Carcinoma Cases Undergoing Neoadjuvant Chemotherapy

Cilt: 52 Sayı: 4 12 Aralık 2025
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Comparison of Tru-Cut and Surgical Biopsy Specimens in Breast Carcinoma Cases Undergoing Neoadjuvant Chemotherapy

Öz

Background: Neoadjuvant chemotherapy (NACT) induces significant pathological changes in breast tumors, which are essential for assessing treatment response and informing postoperative management. Objective: The present study aimed to evaluate the changes in hormone receptors and prognostic markers (ER, PR, HER2, Ki-67) in patients who underwent breast-conserving surgery or mastectomy after NACT regimens. Methods: This retrospective study compared the expression of HER2, Ki-67, ER, and PR in tumor tissues from tru-cut biopsy samples and post-NACT resection materials using immunohistochemical analysis. Results: Patients who underwent NACT between January 2021 and 2025 were evaluated. The distribution of patients based on receptor status and molecular subtypes in tru-cut biopsy material was as follows: 51.2% ER-positive, 51.2% PR-positive, 16.3% luminal A, 25.6% luminal B, 27.9% HER2-positive, and 13% triple-negative breast cancer. A small proportion (8%) of resection specimens from patients who received NACT showed post-treatment changes in hormone receptor status (ER and PR). A higher proportion (20%) of resection specimens from patients who received NACT exhibited a decrease in Ki-67 expression, shifting from high to low positivity. Conclusion: Changes in receptor status after NACT cannot be attributed to treatment alone, but the shift from hormone receptor-positive to hormone receptor-negative and loss of HER2 are likely to be due to the effects of NACT. Conversely, shifts from negative to positive are more likely related to intratumoral heterogeneity. Clinically, positive receptor status is important because it can influence adjuvant treatment decisions. Thus, post-NACT reevaluation of biomarkers is essential for accurate therapeutic planning.

Anahtar Kelimeler

Etik Beyan

Ethical approval for the study was obtained from the İzmir Bakırçay University Non-Interventional Clinical Research Ethics Committee (Date: 03.07.2024, Decision No: 1658).

Kaynakça

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  8. 8.Von Minckwitz G, Untch M, Blohmer JU, et al.Definition and impact of pathologic completeresponse on prognosis after neoadjuvantchemotherapy in various intrinsic breast cancersubtypes. J Clin Oncol 2012; 30 (15): 1796-804.doi:10.1200/JCO.2011.38.8595

Ayrıntılar

Birincil Dil

İngilizce

Konular

Sağlık Kurumları Yönetimi, Tıp Eğitimi, Sağlık Hizmetleri ve Sistemleri (Diğer)

Bölüm

Araştırma Makalesi

Yazarlar

Tuba Devrim * Bu kişi benim
Türkiye

Helin Tinas Abacı Bu kişi benim
Türkiye

Yayımlanma Tarihi

12 Aralık 2025

Gönderilme Tarihi

21 Nisan 2025

Kabul Tarihi

4 Aralık 2025

Yayımlandığı Sayı

Yıl 2025 Cilt: 52 Sayı: 4

Kaynak Göster

APA
Devrim, T., Erkılınç, G., Tuncer, S. S., Tinas Abacı, H., Uğur Duman, F., & Kebapçı, E. (2025). Comparison of Tru-Cut and Surgical Biopsy Specimens in Breast Carcinoma Cases Undergoing Neoadjuvant Chemotherapy. Dicle Medical Journal, 52(4), 827-835. https://doi.org/10.5798/dicletip.1841088
AMA
1.Devrim T, Erkılınç G, Tuncer SS, Tinas Abacı H, Uğur Duman F, Kebapçı E. Comparison of Tru-Cut and Surgical Biopsy Specimens in Breast Carcinoma Cases Undergoing Neoadjuvant Chemotherapy. diclemedj. 2025;52(4):827-835. doi:10.5798/dicletip.1841088
Chicago
Devrim, Tuba, Gamze Erkılınç, Saniye Sevim Tuncer, Helin Tinas Abacı, Fazilet Uğur Duman, ve Eyup Kebapçı. 2025. “Comparison of Tru-Cut and Surgical Biopsy Specimens in Breast Carcinoma Cases Undergoing Neoadjuvant Chemotherapy”. Dicle Medical Journal 52 (4): 827-35. https://doi.org/10.5798/dicletip.1841088.
EndNote
Devrim T, Erkılınç G, Tuncer SS, Tinas Abacı H, Uğur Duman F, Kebapçı E (01 Aralık 2025) Comparison of Tru-Cut and Surgical Biopsy Specimens in Breast Carcinoma Cases Undergoing Neoadjuvant Chemotherapy. Dicle Medical Journal 52 4 827–835.
IEEE
[1]T. Devrim, G. Erkılınç, S. S. Tuncer, H. Tinas Abacı, F. Uğur Duman, ve E. Kebapçı, “Comparison of Tru-Cut and Surgical Biopsy Specimens in Breast Carcinoma Cases Undergoing Neoadjuvant Chemotherapy”, diclemedj, c. 52, sy 4, ss. 827–835, Ara. 2025, doi: 10.5798/dicletip.1841088.
ISNAD
Devrim, Tuba - Erkılınç, Gamze - Tuncer, Saniye Sevim - Tinas Abacı, Helin - Uğur Duman, Fazilet - Kebapçı, Eyup. “Comparison of Tru-Cut and Surgical Biopsy Specimens in Breast Carcinoma Cases Undergoing Neoadjuvant Chemotherapy”. Dicle Medical Journal 52/4 (01 Aralık 2025): 827-835. https://doi.org/10.5798/dicletip.1841088.
JAMA
1.Devrim T, Erkılınç G, Tuncer SS, Tinas Abacı H, Uğur Duman F, Kebapçı E. Comparison of Tru-Cut and Surgical Biopsy Specimens in Breast Carcinoma Cases Undergoing Neoadjuvant Chemotherapy. diclemedj. 2025;52:827–835.
MLA
Devrim, Tuba, vd. “Comparison of Tru-Cut and Surgical Biopsy Specimens in Breast Carcinoma Cases Undergoing Neoadjuvant Chemotherapy”. Dicle Medical Journal, c. 52, sy 4, Aralık 2025, ss. 827-35, doi:10.5798/dicletip.1841088.
Vancouver
1.Tuba Devrim, Gamze Erkılınç, Saniye Sevim Tuncer, Helin Tinas Abacı, Fazilet Uğur Duman, Eyup Kebapçı. Comparison of Tru-Cut and Surgical Biopsy Specimens in Breast Carcinoma Cases Undergoing Neoadjuvant Chemotherapy. diclemedj. 01 Aralık 2025;52(4):827-35. doi:10.5798/dicletip.1841088