Browsing by Author "Kibar, Mustafa"
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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 Does Sunlight Exposure Improve Survival in Patients with Non-small Cell Lung Cancer?(ASIAN PACIFIC ORGANIZATION CANCER PREVENTION, 2013-01-01) Mutlu, Hasan; Buyukcelik, Abdullah; Aksahin, Arzu; Kibar, Mustafa; Cihan, Yasemin Benderli; Kaya, Eser; Seyrek, Ertugrul; Yavuz, Sinan; Erden, Abdulsamet; Calikusu, Zuleyha; Aslan, Tuncay; Akca, ZekiBackground: Some epidemiological studies reported that sunlight exposure and highvitamin D levels may decrease the morbidity and mortality related to cancer. We aimed to evaluate whether sunlight exposure has an impact on survival in patients with non small cell lung cancer. Materials and Methods: A total of 546 patients with NSCLC from two different regions (Kayseri and Adana) differing according to sunlight exposure were analysed retrospectively. Results: The median overall survival (OS) rates were 11. 6 (CI: 9.50-13.6) and 15.6 months (CI: 12.4-18.8) for Kayseri and Adana, respectively, in all patients (p=0.880). Conclusions: There were no differences between groups in terms of OS. While there is strong evidence regarding inverse relationship between cancer incidence and sunlight exposure, it is still controversial whether sunlight exposure is a good prognostic factor for survival in patients with lung cancer.Item False Positive 18F-FDG Uptake in Mediastinal Lymph Nodes Detected with Positron Emission Tomography in Breast Cancer: A Case Report(HINDAWI LTD, 2013-01-01) Ugurluer, Gamze; Kibar, Mustafa; Yavuz, Sinan; Kuzucu, Akin; Serin, MeltemBreast cancer is the most frequently diagnosed cancer among females. It is accepted that lymph node involvement with metastatic tumor and the presence of distant metastasis are the most important prognostic factors. Accurate staging is important in determining prognosis and appropriate treatment. Positron emission tomography with computed tomography detectsmalignancies using 2-{[}18F]-fluoro-2-deoxy-d-glucose (18F-FDG PET CT) with high accuracy and they contribute to decisions regarding diagnosis, staging, recurrence, and treatment response. Here, we report a case of false positive metastatic mediastinal lymph nodes that were diagnosed by 18F-FDG PET CT in a 40-year-old breast cancer patient who had undergone preoperative evaluation. Right paratracheal, prevascular, aorticopulmonary, precarinal, subcarinal, hilar, and subhilar multiple conglomerated mediastinal lymph nodes were revealed in addition to left breast mass and axillary lymph nodes. Mediastinoscopy was performed with biopsy and pathology was reported as granulomatous lymphadenitis. In conclusion, any abnormal FDG accumulation in unusual lymph nodes must be evaluated carefully and confirmed histopathologically.Item Serviks Kanserli Hastalarda PET/BT Tetkikinde Primer Tümörün FDG Tutulum Derecesi ile Lenf Nodu Metastazı Arasındaki İlişki(Acıbadem Mehmet Ali Aydınlar Üniversitesi, 2016-03-01) Uğurluer, Gamze; Atalar, Banu; Saran İkizler, Hayriye Aslı; Sözer, Nihat; Kibar, Mustafa; Serin, Meltem; Özyar, EnisÖzet Amaç: Bu çalışmada, serviks kanserli hastalarda Pozitron Emisyon Tomografisi/Bilgisayarlı Tomografi (PET/BT) tetkikinde primer tümörün FDG tutulum derecesi ile lenf nodu metastazı arasındaki ilişkinin saptanması amaçlandı. Gereç ve yöntem: Tedavi öncesi evreleme amacıyla PET/BT tetkiki yapılan 103 hasta çalışmaya dahil edildi. Primer tümörün mak simum standart uptake (SUVmaks) değeri, PET/BT tetkikinde ölçülen maksimum tümör çapı, pelvik ve paraaortik lenf nodlarında FDG tutulumu olup olmadığı ve FDG tutulumu olan lenf nodlarında SUVmaks değerleri her hasta için kaydedildi. SUVmaks değer lerinin lenf nodu metastazı ile ilişkisi araştırıldı. İstatistiksel analiz SPSS programı ile yapıldı. Bulgular: Ortanca yaş 56 idi (31-91 arası). SUVmaks ortalama değerleri primer tümör için 14,3±6,3 (3,9-34,2 arası) ve lenf nod ları için 8,6±3,9 (2,8-19,3 arası) idi. Lenf nodu tutulumu olan ve olmayan hastalarda SUVmaks ortalama değerleri sırasıyla 15,9 (4,1-34,2 arası) ve 11,9 (3,9-25,5 arası) idi (p <0,05). Medyan SUVmaks değerine (13,9) göre düşük ve yüksek olarak sınıflandırı lan gruplarda ortalama değerler sırasıyla 9,3 (3,9-13,4 arası) ve 18,9 (13,9-34,2 arası) idi. Düşük SUVmaks grubunda hastaların %46’sında, yüksek SUVmaks grubunda %70’inde lenf nodu tutulumu vardı (p <0,05). Tümör çapı ≤4 cm ve >4 cm olan hastalarda SUVmaks ortalama değerleri 13,1 (5,5-25,5 arası) ve 17,1 (7,7-34,2 arası) idi. Tümör çapı ≤4 cm olan hastaların %42’sinde ve >4 cm olan hastaların %66’sında lenf nodu tutulumu vardı. SUVmaks değerleri ve lenf nodu FDG tutulumu açısından iki grup arasın daki fark istatistiksel olarak anlamlıydı (p <0,05). Sonuç: Serviks kanserli hastalarda primer tümörde yüksek SUVmaks değerleri lenf nodu metastazı açısından yüksek riski göstere bilir ve hastaların prognozunu ve tedavi yaklaşımının seçilmesini etkileyebilir.Item Staging with PET-CT in Patients with Locally Advanced Non Small Cell Lung Cancer is Superior to Conventional Staging Methods in Terms of Survival(ASIAN PACIFIC ORGANIZATION CANCER PREVENTION, 2013-01-01) Mutlu, Hasan; Buyukcelik, Abdullah; Erden, Abdulsamet; Aslan, Tuncay; Akca, Zeki; Kaya, Eser; Kibar, Mustafa; Seyrek, Ertugrul; Yavuz, Sinan; Calikusu, ZuleyhaBackground: Of patients with non small cell lung cancer (NSCLC), around one third are locally advanced at the time of diagnosis. Because only a proprotion of stage III patients can be cured by surgery, in order to improve the outcomes, sequential or concurrent chemoradiation, or concurrent chemoradiation with induction or consolidation is offered to the patients with locally advanced NSCLC. Today, PET combined with computerized tomography (PET-CT) is accepted as the most sensitive technique for detecting mediastinal lymph node and extracranial metastases from NSCLC. We aimed to compare PET-CT and conventional staging procedures for decisions regarding curative treatment of locally advanced NSCLC. Materials and Methods: A total of 168 consecutive patients were included from Acibadem Kayseri Hospital, Acibadem Adana Hospital and Kayseri Research and Training Hospital in this study. Results: While the median PFS was 13.0 +/- 1.9 months in the PET-CT group, it was only 6.0 +/- 0.9 in the others (p<0.001). The median OS values were 20.5 +/- 15.6 and 11.5 +/- 1.5 months, respectively (p<0.001). Discussion: As a result, we found that staging with PET CT has better results in terms of survival staging. This superiority leads to survival advantage in patients with locally advanced NSCLC.Item Sunlight may increase the FDG uptake value in primary tumors of patients with non-small cell lung cancer(SPANDIDOS PUBL LTD, 2013-01-01) Mutlu, Hasan; Buyukcelik, Abdullah; Kaya, Eser; Kibar, Mustafa; Seyrek, Ertugrul; Yavuz, Sinan; Calikusu, ZuleyhaCurrently, positron emission tomography with computerized tomography (PET-CT) is the most sensitive technique for detecting extracranial metastases in non-small cell lung cancer (NSCLC). It has been reported that there is a correlation between the maximal standardized uptake value (SUVmax) of primary tumors and prognosis in patients with NSCLC. The effect of sunlight exposure on PET-CT SUVmax value is not known. Therefore, we aimed to evaluate the effect of sunlight exposure on PET-CT SUVmax a value in patients with NSCLC. A total of 290 patients with NSCLC from two different regions of Turkey (Kayseri, n=168 and Adana, n=122) that have different climate and sunlight exposure intensity, were included in the study. Age, gender, histology of cancer, cancer stage, smoking status, comorbidity and SUVmax of the primary tumor area at the time of staging were evaluated as prognostic factors. In the multivariate analysis, we detected that the region was the only independent factor affecting SUVmax (P=0.019). We identified that warmer climate and more sunlight exposure significantly increases the SUVmax value of the primary tumor area in patients with NSCLC. Further studies are warranted to clarify the issue.