Birsen Yücel

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Bulgular: Hastalar›n %97’si erkek ve %3’ü kad›n olup, medyan yafl› 59 (37-86) idi. Erken evre %43, lokal ileri evre %55, metastatik evre kanser %2 hastada saptand›. Hastalar›n %53’ünü glottik kanserler, %47’sini supraglottik kanserler oluflturmaktayd›. Supraglottik kanserlerin performans durumu (p=0.022), grade (p=0.033), T evresi (p=0.034), lenf nod(More)
BACKGROUND/AIMS This study aimed to examine whether UHRF-1 and p53 overexpression is a prognostic marker for gastric cancer. PATIENTS AND METHODS Sixty-four patients with gastric cancer (study group) and 23 patients with gastritis (control group) were evaluated. Immunohistochemistry was used to examine expression of UHRF-1 and p53 in gastric cancers and a(More)
AIM The aim of this study was to determine the impact of age on the occurrence, severity, and timing of acute side effects related to radiotherapy. MATERIALS AND METHODS We analysed the data of 423 patients. RESULTS Of the patients, 295 (70%) were under the age of 65 (group 1) and 128 (30%) were over the age of 65 (group 2). The frequencies of(More)
OBJECTIVE Typically, bone metastasis causes osteolytic and osteoblastic lesions resulting from the interactions of tumor cells with osteoclasts and osteoblasts. In addition to these interactions, tumor tissues may grow inside bones and cause mass lesions. In the present study, we aimed to demonstrate the negative impact of a tumor mass in a large cohort of(More)
OBJECTIVE Mutations in the p53 gene are the most commonly observed genetic abnormalities in malignancies. The purpose of this study was to assess the diagnostic value of serum anti-p53 antibody (Ab) along with the correlation between serum anti-p53 Ab level and quantitative positron emission tomography (PET) parameters such as maximum standardized uptake(More)
Natural background gamma radiation was measured along roads in the environs of Çanakkale region by using a car-borne spectrometer system with a plastic gamma radiation detector. In addition, activity concentrations of ²³⁸U, ²²⁶Ra, ²³²Th and ⁴⁰K in soil samples from the Çanakkale region were determined by using a gamma spectrometer with an HPGe detector. A(More)
OBJECTIVE The aim of the present study was to evaluate the response to treatment by histopathologic type in patients with lung cancer and under follow-up with 18F-fluoro-2deoxy-glucose-positron emission tomography/computed tomography (18F-FDG PET/CT) imaging by using Response Evaluation Criteria in Solid Tumors (RECIST) and European Organisation for(More)
In spite of a constantly-increasing requirement for blood transfusion in the world, blood donation does not exhibit an increase at the same rate. In Turkey with a population of 74 million, only 15 per 10,000 people donate blood regularly and rate of voluntary blood donation is very low compared to developed countries. The aim of this study is to determine(More)
BACKGROUND AND PURPOSE For conformal radiotherapy, it is feasible to achieve high accuracy in contouring the outline of the target volume in treatment planning process. In contouring process, target volume is occasionally defined by means of either surgical clips or skin marker during patient anatomical data acquisition. Treatment planning systems are(More)
AIM The purpose of the present study is to show the application of the IAEA TRS-430 QA procedures of Eclipse™v7.5 TPS for photon energies. In addition, the trends of the deviations found in the conducted tests were determined. BACKGROUND In the past, the lack of complete TPS QA procedures led to some serious accidents. So, QA in the radiotherapy treatment(More)
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