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Öğe Assessment of Ten-Year-Long Results of Kidney Biopsies Performed on Children in the Thrace Region of Turkey(2016) Özkayın, Neşe; Çıplak, Gökçe; Usta, Ufuk; Gençhellaç, Hakan; Temizöz, OsmanBackground: Many children with kidney diseases can be diagnosed and treated without a biopsy. However, biopsy is a valuable method for the diagnostic and prognostic evaluation of children with kidney diseases. Aims: To evaluate the clinical and pathological profiles of the kidney biopsies in our department to provide epidemiological data for clinical practice. Study Design: Retrospective cross-sectional study. Methods: Kidney biopsies and patient's charts in pediatric patients performed between May 2005 and February 2015 at the Pediatric Nephrology Department, Trakya University School of Medicine were assessed retrospectively. Results: A total of 100 patients were examined. Their mean age was 9.62±4.26 years (range: 1-17 years); 54% of the patients were girls and 46% were boys. The most frequent indication for kidney biopsy was nephrotic syndrome (33%). The most common kidney disease was primary glomerulonephritis, which was observed in 65% of cases. IgA nephropathy (24%) was the most frequently observed subtype in primary glomerulonephritis groups. Secondary glomerulonephritis was diagnosed in 35% of cases. Systemic lupus erythematosus (51%) was the most frequently observed subtype in the secondary glomerulonephritis groups. Conclusion: IgA nephropathy and systemic lupus erythematosus were the most frequent primary and secondary glomerulonephritis in our region among children, respectively.Öğe A destroyer immunologic cause in small cell lung carcinoma: Ectopic cushing's syndrome(2010) Çiçin, İrfan; Uzunoğlu, Sernaz; Ermantaş, Nilay; Usta, Ufuk; Temizöz, Osman; Karagöl, HakanEktopik adrenokortikotop (ACTH) salınmasına bağlı Cushing sendromu, küçük hücreli akciğer kanserli hastalarda diğer birçok paraneoplastik sendromlara göre daha sık görülür. Bu hastalarda hücresel bağışıklık sisteminin baskılanması hem hekimler hem de hastalar için önemli bir sorundur. Ek olarak kemoterapi, bu hastalarda şiddetli ve daha yüksek oranda hematolojik toksisiteye neden olmaktadır. Biz ektopik ACTH salınması ile ilişkili Cushing sendromuna bağlı humoral ve hücresel bağışıklık sistemi baskılanmış çok kötü seyirli bir küçük hücreli akciğer vakası sunduk. Ayrıca, bu özel vaka ve literatür ışığında Cushing sendrom olan küçük hücreli akciğerli hastalar için tedavi stratejileri önerdik.Öğe Diffusion Weighted Magnetic Resonance Imaging for the Characterization of Solitary Pulmonary Lesions(2015) Çakır, Çağlayan; Gençhellaç, Hakan; Temizöz, Osman; Polat, Ahmet; Şengül, Ersin; Duygulu, GökhanBackground: We evaluated the differential diagnosis of solitary pulmonary lesions on magnetic resonance imaging.Aims: To investigate the value of diffusion weighted imaging on the differential diagnosis of solitary pul-monary lesions.Study Design: Randomized prospective study.Methods: This prospective study included 48 solitary pulmonary nodules and masses (18 benign, 30 ma-lignant). Single shot echo planar spin echo diffusion weighted imaging (DWI) was performed with two b factors (0 and 1000 s/mm2). Apparent diffusion coeffi-cients (ADCs) were calculated. On diffusion weighted (DW) trace images, the signal intensities (SI) of the le-sions were visually compared to the SI of the thoracic spinal cord using a 5-point scale: 1: hypointense, 2: moderately hypointense, 3: isointense, 4: moderately hyperintense, 5: significantly hyperintense. For the quantitative evaluation, the lesion to thoracic spinal signal intensity ratios and the ADCs of the lesions were compared between groups.Results: On visual evaluation, taking the density of the spinal cord as a reference, most benign lesions were found to be hypointense, while most of the malignant lesions were evaluated as hyperintense on DWI with a b factor of 1000 s/mm2. In contrast, on T2 weighted images, it was seen that the distinction of malignant lesions from benign lesions was not statistically significant. The ADCs of the malignant lesions were significantly lower than those of benign lesions (mean ADC was 2.02×10-3 mm2/s for malignant lesions, and 1.195×10-3±0.3 mm2/s for benign lesions). Setting the cut-off value at 1.5×10-3, ADC had a sensitivity of 86.7% and a specificity of 88.9% for the differentiation of benign lesions from malignant lesions.Conclusion: DWI may aid in the differential diagnosis of solitary pulmonary lesions. (ClinicalTrials.gov Iden-tifier: NCT02482181)Öğe Mangafodipir trisodyum ile pankreas malign kitlelerinin değerlendirilmesi(2009) Argımak, Yasin; Temizöz, Osman; Tosun, Alptekin; Çakır, BilgeAmaç: Organ spesifik ajan olan mangafodipir trisodyum (Mn-DPDP) kullanılarak yapılan manyetik rezonans görüntülemenin pankreas malign kitlelerinin incelenmesinde tanısal etkinliğini incelemek. Hastalar ve Yöntemler: Abdominal ultrasonografi ve bilgisayarlı tomografi bulguları ile pankreas tümörü düşünülen 17 hastanın (7 kadın, 10 erkek; ort. yaş 63.2±12; dağılım 36-80) manyetik rezonans görüntüleri, T1A SE, yağ baskılı T1A SE ve T1A GRE sekanslarının kullanımı ile sinyal-gürültü (S/N) ve kontrast-gürültü (C/N) oranları açısından Mn-DPDP uygulaması öncesi ve sonrası incelendi. Bulgular: Kontrast öncesi ve sonrası incelemelerde normal pankreasın S/N oranlarında artış T1A SE sekansta ortalama %22.81, yağ baskılı T1A SE sekansında %32.88 ve T1A GRE sekansında %20 olarak bulundu. Normal pankreas dokusu ve tümör kitlesi sinyal intensite değerlerinden hesaplanan C/N oranında ise yüzde artış T1A SE sekansı için ortalama %58.69, yağ baskılı T1A SE sekansta %125.41 ve T1A GRE sekansta %62.06 olarak saptandı. Ayrıca uygulanan sinyal intensite ölçümlerine göre her üç sekansta elde edilen kontrast öncesi ve sonrası C/N oranlarındaki artış istatistiksel olarak anlamlı idi (paired Student t testi p<0.0001). Sonuç: Kontrast madde olarak Mn-DPDP'nin kullanımı ile C/N oranlarındaki değişim pankreasın malign kitlelerinin incelenmesinde tanıya katkı sağlayabilir.Öğe A rare case of schwannoma arising from a diverticulum in the first portion of duodenum(2012) Gençhellaç, Hakan; Temizöz, Osman[Abtract Not Available]Öğe Two-detector Computed Tomography Map of the Inferior Epigastric Vessels for Percutaneous Transabdominal Intervention Procedures(2014) Gençhellaç, Hakan; Dursun, Memduh; Temizöz, Osman; Çağlı, Bekir; Demir, Mustafa K.Background:It is crucial to know anatomic variations and the exact course of an inferior epigastric artery (IEA) to prevent any complica-tions during percutaneous abdominal interventions. Aims:The aim of this study was to map the inferior epigastric ves-sels using reconstructed two-detector computed tomography images and measure the distance from the inferior epigastric artery (IEA) to the midline to determine a safe route for percutaneous abdominal interventions. Study Design: Retrospective comparative study.Methods:Coronal reconstructed two-detector computed tomogra-phy images of 200 patients were evaluated to measure the distances between the IEA and midline at three levels (origin, middle, and dis-tal). Vein and artery arrangements were documented.Results:The most frequently encountered arrangement (41.5%) was a single vein and artery on both sides. Mean distances on the right and left sides were 4.01 and 4.47 cm at the umbilical level, 3.81 and 4.26 cm at the midlevel, and 5.62 and 5.51 cm at the origin level. On both sides, measurement differences between the three levels were highlysignificant (p<0.05). In addition, a total of 56 IEA bifurcations were depicted in all 200 patients. Thirteen of the 56 bifurcations occurredonly on the right side, 11 only on the left side, and 32 on both sides.Conclusion:It is important to be attentive to the IEA's course, at different midline levels, when attempting percutaneous interventions via an abdominal approach.
