Person: UĞURLU, MUSTAFA ÜMİT
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UĞURLU
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MUSTAFA ÜMİT
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Publication Metadata only Neoadjuvan kemoterapi uygulanan meme kanserli olgularda güvenli tümör-meme ucu mesafesini meme MR öngörebilir mi?(2022-02-24) UĞURLU, MUSTAFA ÜMİT; AKMERCAN, AHMET; BUĞDAYCI, ONUR; KAYA, HANDAN; AKOĞLU, HALDUN; GÜLLÜOĞLU, MAHMUT BAHADIR; UĞURLU M. Ü., AKMERCAN A., BUĞDAYCI O., KAYA H., AKIN TELLİ T., AKOĞLU H., GÜLLÜOĞLU M. B.Publication Metadata only Prognostic Role of Immune Markers in Triple Negative Breast Carcinoma(SPRINGER, 2020) KAYA, HANDAN; Sahin Ozkan, Hulya; Ugurlu, Mustafa Umit; Yumuk, Perran Fulden; Kaya, HandanTumor immune microenvironment (TIME) is a significant prognostic parameter for triple negative breast carcinomas (TNBC) due to being a target for immunotherapeutic agents and its essential role during the cancer immunoediting process. In this study, CD8, FOXP3, CD163, PD-L1/SP142 and PD-L1/SP263 antibodies were examined in a sample of 51 TNBC cases. Patients who received neoadjuvant therapy were excluded. CD8, FOXP3 and CD163 antibodies were evaluated separately in intratumoral area (ITA) and tumor stroma (TS). PD-L1 status was also examined in tumor cells (TC) and immune cells (IC) using both SP142 and SP263 antibodies. In multivariate Cox regressions, the only antibody that was found to be significantly associated with survival was SP142. SP142-positivity in TC and IC was related to increased overall survival. Higher CD163 expression in ITA and SP263-positivity in IC were associated with younger age. Lymphatic/angioinvasion was more frequent in cases with negative/low CD8 and FOXP3 expressions. Moreover, metastatic axillary lymph node(s) was associated with negative/low FOXP3 expression in TS. CD8, FOXP3, CD163, SP142 and SP263 expressions were positively correlated with each other, except a mild discordance caused by CD163 in ITA. Although PD-L1 status with both SP142 and SP263 antibodies were concordant in the majority of cases, 33.3% and 13.7% of the cases showed SP142-negative/SP263-positive pattern in TC and IC respectively. In conclusion, we suggest that composition, density and localization of the immune cells and the check point molecules are important prognostic parameters in TNBC. Immunohistochemistry can be used as an accessible and less expensive tool to demonstrate TIME.Publication Metadata only Meme kanserinde neoadjuvan kemoterapi sonrası es-zamani: Rekonstrüksiyon güvenli midir? 5 yıllık tek merkez onkolojik sonuçlar(2022-09-18) UĞURLU, MUSTAFA ÜMİT; AKMERCAN, AHMET; SAÇAK, BÜLENT; AKDENİZ DOĞAN, ZEYNEP DENİZ; KAYA, HANDAN; BUĞDAYCI, ONUR; GÜLLÜOĞLU, MAHMUT BAHADIR; UĞURLU M. Ü., AKMERCAN A., SAÇAK B., AKDENİZ DOĞAN Z. D., HAYTAOĞLU A. A., KAYA H., BUĞDAYCI O., AKIN TELLİ T., ÖZGEN Z., GÜLLÜOĞLU M. B.Publication Open Access Changes in 18F-FDG-PET/CT tumor metabolism are not consistent with pathologic complete response in hormone-positive breast cancer(2017-09-01) DEDE, FUAT; KAYA, HANDAN; UĞURLU, MUSTAFA ÜMİT; Kaya S., Aktas B., Tanrikulu E., ÖZTÜRK M. S., DEDE F., KAYA H., Ugurlu U., Ozgen Z., Koca S., Halil S., et al.© 2017 Zerbinis Publications. All rights reserved.Purpose: Current evaluation of response to neoadjuvant chemotherapy (NAC) shows that it could achieve pathological complete response (pCR). The purpose of this study was to assess the consistency of maximum uptake values (SUVmax) changes and pCR in hormone-positive locally advanced breast cancer (LABC). Methods: Ninety hormone-positive LABC patients treated at Marmara University Medical Oncology Clinic, Istanbul, Turkey, between 2009 and 2015 were retrospectively studied. All eligible patients (n=51) received NAC (4-8 cycles) and were evaluated for pCR. 18F-fluorodeoxyglucose positron emission tomography/ computed tomography (18F-FDG-PET/CT) scan was performed before and after the completion of NAC. The relative changes of SUVmax both in the primary tumor and the axilla were assessed for consistency with pCR. Results: The patient median age was 46 years (range 26-76). The patients 13.7% achieved pCR. Values of >50% (n=40) and 75% SUVmax changes could achieve pCR of 20%. Interestingly, most patients with complete metabolic response did not achieve pCR (81%). The difference of the Ki67 levels before and after NAC, tumor localization, HER-2 positivity, menopausal status, grade of differentiation, lymphovascular and perineural invasion were not associated with pCR. Conclusion: SUVmax changes in later cycles of NAC as commonly practised in oncology clinics were not consistent with pCR (p=1.0). Complete metabolic response may not be associated with pCR in hormone-positive LABC. However, almost 80% of patients had >50% decrease in SUVmax and may still have a chance for conservative surgery and less postoperative morbidity. Therefore, 18F-FDG-PET/CT may still have a role to evaluate the tumor response with a need of larger studies and analysis for cost-effectiveness.Publication Open Access Clinicopathologic and radiologic characteristics of pleomorphic lobular breast cancer(2021-01-01) KAYA, HANDAN; BUĞDAYCI, ONUR; UĞURLU, MUSTAFA ÜMİT; ARIKAN R., AKIN TELLİ T., ALAN Ö., DEMİRCAN N. C. , BAŞOĞLU T., ERCELEP Ö., KAYA H., BUĞDAYCI O., UĞURLU M. Ü. , ÖZGEN Z., et al.Objectives: The objective of the study was to evaluate clinicopathologic and radiologic features of patients with pleomorphic lobular breast cancer (pleomorphic lobular carcinoma [PLC]). Methods: We retrospectively evaluated the clinicopathologic and radiologic features of 25 PLC patients treated in our division from 2012 to 2018. Results: Median age was 50 (range, 42–55) and 48% were postmenopausal. The presence of spiculated mass was 92%. Median tumor size was 21.9 mm (SD±12.7 mm) and axillary lymph node positivity was 44%. Frequency of microcalcification was 12% and frequency of occult breast cancer was 8%. About 72% of patients had Stage 2 or 3 disease. De novo metastatic disease was 8% and another 8% developed metastasis during follow-up. ER, PR, and Her2/neu were positive in 76%, 44%, and 8%, respectively, and 16% of patients were triple negative. All tumors were Grade III. Median Ki-67 was 22% (range 3–90%). Frequency of lymphovascular invasion was 52%. Patients were followed median of 34.5 months (95% CI, 22.2–46.8), since during this period, two patients recurred and five died, median disease-free survival and overall survival could not be reached. Conclusion: Our data suggest that patients with PLC present with poor prognostic features such as large tumor size, axillary lymph node positivity, and high lymphovascular invasion and tumor grade and Ki-67Publication Metadata only Multiparametric breast MRI with 3T: Effectivity of combination of contrast enhanced MRI, DWI and 1H single voxel spectroscopy in differentiation of Breast tumors(ELSEVIER IRELAND LTD, 2016) KAYA, HANDAN; Aribal, Erkin; Asadov, Ruslan; Ramazan, Abdullah; Ugurlu, Mustafa Umit; Kaya, HandanObjectives: To evaluate the diagnostic accuracy of dynamic contrast enhanced breast MRI (DCE-MRI) combined with diffusion weighted imaging (DWI) and 1H single-voxel magnetic resonance spectroscopy (1HMRS) in differentiating malignant from benign breast lesions. Methods: One hundred twenty-nine patients with 138 lesions were included in the study. Multiparametric MRI of the breast was performed with a 3T unit. A DWI is followed by DCE-MRI and 1HMRS. All lesions were biopsied within one week after MRI. Histopathologic findings were accepted as the standard of reference. Probability of malignancy was assessed according to BI-RADS for DCE-MRI. ADC values were measured for DWI and choline peaks were assessed using a semi-quantitative method in 1HMRS. Two blinded radiologists evaluated findings in consensus. Diagnostic performance of DCE-MRI, DWI and 1HMRS alone or in combination for multiparametric imaging were statistically evaluated. Results: Histopathology revealed malignancy in 54.4% of lesions (75/138). DCE-MRI showed the highest AUC (0.978), sensitivity (97.33%) and specificity (88.89%) compared to DWI and 1HMRS. Sensitivity was 100% when a positive result from any one of three techniques was accepted as malignancy, albeit with a trade-off for 65.1% specificity. Highest specificity (98.4%) was attained when all three techniques were required to be positive, though with a lower sensitivity (82.7%) as trade-off. Logistic regression analysis confirmed significant association with DCE-MRI (p < 0.001) and 1H MRS (p = 0.009) but not with DWI (p = 0.127). There was one case of fat necrosis which was false positive in all three techniques. Conclusions: Multiparametric imaging with combination of DCE-MRI, DWI and 1HMRS does not improve, and may even reduce the diagnostic accuracy of breast MRI. Although, the specificity may be improved with a trade-off for lower sensitivity, we have not set a convenient algorithm for the combined use of these techniques. (C) 2016 Elsevier Ireland Ltd. All rights reserved.Publication Metadata only Neoadjuvan kemoterapi sonrası meme koruyucu cerrahide marjin pozitifligi ve reeksizyon oranları(2022-03-23) UĞURLU, MUSTAFA ÜMİT; AKMERCAN, AHMET; KAYA, HANDAN; BUĞDAYCI, ONUR; GÜLLÜOĞLU, MAHMUT BAHADIR; UĞURLU M. Ü., AKMERCAN A., KAYA H., BUĞDAYCI O., YUMUK P. F., GÜLLÜOĞLU M. B.Publication Metadata only Conventional tools for predicting satisfactory response to neoadjuvant chemotherapy in HR+/HER2- breast cancer patients(2023-10-01) GÜLLÜOĞLU, MAHMUT BAHADIR; EREN, ÖZGÜR CAN; KAYA, HANDAN; UĞURLU, MUSTAFA ÜMİT; Oprea A. L., GÜLLÜOĞLU M. B., Aytin Y. E., EREN Ö. C., Aral C., Szekely T. B., TAŞTEKİN E., KAYA H., BADEMLER S., Karanllk H., et al.Aim: The aim of the study was to assess the role of Magee Equation 3 (MagEq3), IHC4 score, and HER2-low status in predicting \"satisfactory response (SR)\"to neoadjuvant chemotherapy (NAC) in HR+/HER2- breast cancer (BC) patients. Methods: In a retrospective study, female patients of any age with T1-4, N0-2, M0 HR+/HER2- BC who received NAC and underwent adequate locoregional surgical treatment were included. Patients were grouped according to 2 outcomes: (a) overall response to NAC in breast and axilla by using residual cancer burden (RCB) criteria and (b) axillary downstaging after NAC by using N staging. 2 cohorts for overall response were overall SR (RCB 0-1) and no SR (RCB 2-3). On the other hand, for axillary downstaging, 2 cohorts constituted from axillary SR (ypN0 and ypN0i+) and no SR (ypNmic-N3). MagEq3 and IHC4 scores were calculated from their pathological tumor slides in each patient. HER2 status was categorized as either \"no\"or \"low.\"In addition, patient age, family history, tumor histology, stage at admission, and Ki-67 status were compared between cohorts according to predefined outcomes. Results: In a total of 230 BC patients, 228 patients were included to compare according to their RCB levels. The mean age of patients with overall SR was significantly lower than those without. Patients with high Ki-67 expression, high (>30) MagEq3 score, high ICH4 quartile, and HER2-low status had significantly more overall SR. On the other hand, only patients with high Ki-67 expression had significantly more axillary SR. MagEq3 score levels, ICH4 quartiles, and HER2 status were similar between patients with axillary SR and not. Conclusion: MagEq3 and IHC4 tools seemed to be useful to predict those HR+/HER2- BC patients who are most likely to get benefit from NAC. But, only high Ki-67 expression level significantly predicted satisfactory axillary downstaging in HR+/HER2- BC patients.Publication Metadata only Efficacy of single voxel 1H MR spectroscopic imaging at 3 T for the differentiation of benign and malign breast lesions(ELSEVIER SCIENCE INC, 2016) KAYA, HANDAN; Ramazan, Abdullah; Demircioglu, Ozlem; Ugurlu, Umit; Kaya, Handan; Aribal, ErkinPurpose: The aim of our study was to evaluate the effect of 1H Magnetic Resonance Spectroscopy (MRS) in differentiating breast lesions. Materials and methods: Single voxel 1H Magnetic Resonance Spectroscopy (1H-MRS) was performed with 3 T magnet in 45 women. The choline cut off point was set semi-quantitavely. Sensitivity, specificity and accuracy of MRS were calculated. Results: Twenty-four of 25 (96%) malignant and 9 of 26 (35%) benign lesions had choline peak. With the use cutoff value of 19,5 MRS provided a 96% sensitivity, 65% specificity and 80% accuracy. Conclusion: MRS has a high diagnostic accuracy in differentiating breast lesions. (C) 2016 Elsevier Inc. All rights reserved.Publication Metadata only Evaluation of high-risk (B3) breast lesions on MRI: the role of conventional and texture analysis features in predicting upgrade to malignancy(2021-06-13) BUĞDAYCI, ONUR; KAYA, HANDAN; UĞURLU, MUSTAFA ÜMİT; AYBAL T., BUĞDAYCI O., ARIBAL M. E., KAYA H., UĞURLU M. Ü., Ilgın C., ÖZDEMİR B.