Araştırma Çıktıları
Permanent URI for this communityhttps://hdl.handle.net/11443/931
Browse
9 results
Search Results
Item Position paper on screening for breast cancer by the European Society of Breast Imaging (EUSOBI) and 30 national breast radiology bodies from Austria, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Israel, Lithuania, Moldova, The Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Spain, Sweden, Switzerland and Turkey(SPRINGER, 2017-01-01) Sardanelli, Francesco; Aase, Hildegunn S.; Alvarez, Marina; Azavedo, Edward; Baarslag, Henk J.; Balleyguier, Corinne; Baltzer, Pascal A.; Beslagic, Vanesa; Bick, Ulrich; Bogdanovic-Stojanovic, Dragana; Briediene, Ruta; Brkljacic, Boris; Herrero, Julia Camps; Colin, Catherine; Cornford, Eleanor; Danes, Jan; de Geer, Gerard; Esen, Gul; Evans, Andrew; Fuchsjaeger, Michael H.; Gilbert, Fiona J.; Graf, Oswald; Hargaden, Gormlaith; Helbich, Thomas H.; Heywang-Koebrunner, Sylvia H.; Ivanov, Valentin; Jonsson, Asbjorn; Kuhl, Christiane K.; Lisencu, Eugenia C.; Luczynska, Elzbieta; Mann, Ritse M.; Marques, Jose C.; Martincich, Laura; Mortier, Margarete; Mueller-Schimpfle, Markus; Ormandi, Katalin; Panizza, Pietro; Pediconi, Federica; Pijnappel, Ruud M.; Pinker, Katja; Rissanen, Tarja; Rotaru, Natalia; Saguatti, Gianni; Sella, Tamar; Slobodnikova, Jana; Talk, Maret; Taourel, Patrice; Trimboli, Rubina M.; Vejborg, Ilse; Vourtsis, Athina; Forrai, GaborEUSOBI and 30 national breast radiology bodies support mammography for population-based screening, demonstrated to reduce breast cancer (BC) mortality and treatment impact. According to the International Agency for Research on Cancer, the reduction in mortality is 40 \% for women aged 50-69 years taking up the invitation while the probability of false-positive needle biopsy is < 1 \% per round and overdiagnosis is only 1-10 \% for a 20-year screening. Mortality reduction was also observed for the age groups 40-49 years and 70-74 years, although with ``limited evidence{''}. Thus, we firstly recommend biennial screening mammography for average-risk women aged 50-69 yearsItem Improvement of early detection of breast cancer through collaborative multi-country efforts: Medical physics component(ELSEVIER SCI LTD, 2018-01-01) Mora, Patricia; Faulkner, Keith; Mahmoud, Ahmed M.; Gershan, Vesna; Kausik, Aruna; Zdesar, Urban; Brandan, Maria-Ester; Kurth, Serap; Davidovic, Jasna; Salama, Dina H.; Aribal, Erkin; Odio, Clara; Chaturvedi, Arvind K.; Sabih, Zahida; Vujnovic, Sasa; Paez, Diana; Delis, HarryPurpose: The International Atomic Energy Agency (IAEA) through a Coordinated Research Project on ``Enhancing Capacity for Early Detection and Diagnosis of Breast Cancer through Imaging{''}, brought together a group of mammography radiologists, medical physicists and radiographersItem Does Lapatinib Increase Pulmonary Toxicity when Concurrently Used with Radiation Therapy? An Experimental Study with Wistar-Albino Rats(AKAD DOKTORLAR YAYINEVI, 2018-01-01) Yetmen Dogan, Ozlem; Guzel, Elif; Coban, Ilker; Suzer, Oner; Bese, NuranLapatinib is an oral receptor tyrosine kinase inhibitor which has shown activity in the treatment of metastatic breast cancer. There is no data regarding the side effects of combination of radiotherapy and Lapatinib. 40 female Wistar-albino rats (WAR) were divided into 4 groupsItem Is Season a Prognostic Factor in Breast Cancer?(ASIAN PACIFIC ORGANIZATION CANCER PREVENTION, 2013-01-01) Mutlu, Hasan; Akca, Zeki; Cihan, Yasemin Benderli; Kurnaz, Fatih; Aslan, Tuncay; Erden, Abdulsamet; Ugur, Hediye; Aksahin, Arzu; Buyukcelik, AbdullahBackground: Some studies have indicated an inverse relationship between cancer risk and sunlight exposure. Others have reported that the prognosis of some cancers such as prostate, colon, ovarian and non melanoma skin cancer, were affected by the season in which the cancer was diagnosed. In our study, we evaluated whether season is prognostic in Turkish patients with breast cancer. Materials and Methods: A total of 517 patients from Kayseri Training and Research Hospital were analysed retrospectively. Patients were divided into 4 groups according to season of cancer diagnosis: winter, spring, summer and autumn. The prognostic factors for disease free survival and overall survival were investigated. Results: No significant differences were found among groups regarding prognostic factors overall. Only estrogen receptor status and lymphovascular invasion were independent prognostic factors (p=0.001 and p=0.001 respectively). We found significantly differences for mean disease free survival among groups (p=0.019). Winter group had better mean DFS while summer group had worse DFS. Mean overall survival was similar in the four groups (p=0.637). Conclusions: The season is not an independent predictive factor. However, due to interaction with other factors, we think that the season of cancer diagnosis is important for cancer prognosis.Item An investigation of the effects of FGFR2 and B7-H4 polymorphisms in breast cancer(WOLTERS KLUWER MEDKNOW PUBLICATIONS, 2013-01-01) Ozgoz, Asuman; Samli, Hale; Ozturk, Kuyas Hekimler; Orhan, Bulent; Icduygu, Fadime Mutlu; Aktepe, Fatma; Imirzalioglu, NecatIntroduction: Polymorphisms in FGFR2 are important markers for breast cancer susceptibility in the general population. CHEK2 and FGFR2 polymorphisms with known susceptibility alleles of BRCA1, BRCA2, PTEN, and TP53, can be investigated as potential modifiers of high penetrant risk alleles. Although the B7-H4 gene is highly expressed in many different tumors, there is one published study showing the association of polymorphisms with breast cancer. We aimed to investigate FGFR2 and B7-H4 polymorphisms in breast cancer in the Turkish community. Materials and Methods: In a group of 31 cases diagnosed with breast cancer and 30 healthy women with matched ages, the single-nucleotide polymorphisms (SNPs) rs1219648, rs2981582 in FGFR2 gene were identified by sequence analysis and the SNPs rs10754339, rs10801935, and rs3738414 in the B7-H4 gene were identified by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. Statistical analysis was performed using SPSS. Results: Although statistically not significant, the frequency of FGFR2 heterozygous polymorphisms in the group with breast cancer was detected to be higher. In the B7-H4 SNP rs10801935, polymorphic AA, and AG genotype distributions were found in higher frequencies in the breast cancer patients. In contrast to the results of a published study, the present study shows that B7-H4 rs3738414 polymorphism GG genotype was found in higher frequency in the control group than the breast cancer group and the result was statistically significant (P=0.018). Conclusion: Larger scale studies are necessary to determine the prevalence of these polymorphisms and association with breast cancer in Turkish community, as this study is the first study performed.Item Is Sunlight a Predisposing Factor for Triple Negative Breast Cancer in Turkey?(ASIAN PACIFIC ORGANIZATION CANCER PREVENTION, 2013-01-01) Mutlu, Hasan; Buyukcelik, Abdullah; Colak, Taner; Ozdogan, Mustafa; Erden, Abdulsamet; Aslan, Tuncay; Akca, ZekiIntraduction: There is known to be a relationship between vitamin D level and more aggresive breast cancer subtypes, especially triple-negative breast cancer (TNBC). It was reported that sunlight exposure has an effect on the prognosis of patients with cancer, possibly related to the conversion of vitamin D to its active form with sunlight. We aimed to evaluate the effect of sunlight exposure on patients with TNBC. Materials-Methods: A total of 1,167 patients with breast cancer from two different regions of Turkey (Antalya and Kayseri, regions having different climate and sunlight exposure intensity over the year) were analysed retrospectively. The ratio of patients with TNBC was identified in those two regions. Results: The ratio of patients with TNBC was 8\% and 12\% for Kayseri and Antalya regions, respectively, and this difference between the two groups was statistically significant (p=0.021). Discussion: Sunlight exposure may be associated with more prevalent TNBC. This finding should be investigated with a prospective study.Item Correlation between 18F-FDG Positron-Emission Tomography 18F-FDG Uptake Levels at Diagnosis and Histopathologic and Immunohistochemical Factors in Patients with Breast Cancer(AVES, 2016-01-01) Ugurluer, Gamze; Yavuz, Sinan; Calikusu, Zuleyha; Seyrek, Ertugrul; Kibar, Mustafa; Serin, Meltem; Ersoz, Canan; Demircan, OrhanObjective: In this study, we aimed to determine the correlation between pretreatment-staging 18F-FDG total body positron-emission tomography/computed tomography (PET/CT) maximum standardized uptake value (SUVmax) levels and histopathologic and immunohistochemical predictive and prognostic factors in patients with breast cancer. Materials and Methods: One hundred thirty-nine women with breast cancer who were treated between 2009 and 2015 at our hospital and who had pretreatment-staging PET/CT were included in the study. SUVmax levels and histopathologic and immunohistochemical results were compared. Results: The median age was 48 years (range, 29-79 years). The mean tumor diameter was 33.4 mm (range, 7-120 mm). The histology was invasive ductal carcinoma in 80.6\% of the patients. In the univariate analysis, SUVmax levels were significantly higher in patients with invasive ductal carcinomaItem HER2/neu Status in Breast Cancer Specimens: Comparison of Immunohistochemistry (IHC) and Fluorescence in situ Hybridization (FISH) Methods(SOC CHILENA ANATOMIA, 2015-01-01) Saglican, Yesim; Ince, UmitHER2 amplification or overexpression is considered as disease outcome and a predictive marker of response to treatment in breast cancer. The present study aimed to compare the results of IHC and FISH for determining HER2 and to search the interpretational differences. Samples (n= 169), of which 31 were the paraffin blocks sent from outer centers, that underwent FISH analysis for HER-2 were included. Samples were re-reviewed by IHC in our laboratory. FISH test was negative in 131 (77.5\%) and positive in 38 (22.5\%). When those with previous IHC 0-1+ were re-reviewed, the results were found again 0-1+ and none of them was FISH positive. Inconsistency between re-reviewed IHC and previous IHC results was 25\% for those with 2+ score and 11\% for those with 3+ score. Consistency between IHC and FISH was 17\% and 67\% for previous IHC 2+ and 3+, respectively, whereas it was 23\% and \%75 for re-reviewed IHC 2+ and 3+, respectively. Whilst 79\% of the samples evaluated as 2+ by the inexperienced pathologist were found to be 0-1+ on the re-review, all of them were FISH negative. According to our results, we suggest that samples with IHC 2+ should be re-reviewed by consulting with an experienced pathologist.Item Factors predicting the non-sentinel lymph node involvement in breast cancer patients with sentinel lymph node metastases(CHURCHILL LIVINGSTONE, 2012-01-01) Boler, D. E.; Uras, C.; Ince, U.; Cabioglu, N.Objective: In a significant proportion of patients, the sentinel lymph node (SLN) is the only involved axillary node. The goal of the present study was to identify predictive factors associated with a positive SLN and with a positive non-SLN in patients in whom axillary lymph node dissection (ALND) was performed. Methods: Data was reviewed for patients with T1-2 invasive breast cancer who underwent SLN biopsy with or without axillary dissection in a single institution between July 2000 and May 2010. The SLNs were examined by serial sectioning and H\&E staining, and by cytokeratin immunostaining in suspicious cases. Results: Of 332 patients with SLNB, 134 had SLN positivity, and 116 of them further underwent completion axillary dissection. Patients with T2 tumors (OR = 3.2