Publications by authors named "Koktener A"

Endometriosis is defined as the growth of functional endometriotic gland and stroma outside the uterine cavity. Although it is common in women of reproductive age, extragenital endometriosis is considerably rare. Due to its frequent localization at the rectosigmoid junction in the gastrointestinal system, endometriosis may manifest with abdominal pain, constipation, and rectal bleeding.

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Purpose: Perianal fistula is an important health problem with devastating morbidity. For diagnosis and prevention of recurrence, perianal fistula imaging (PFI) is crucial. The aim of this study was to investigate if a Flex-M superficial coil images would provide more information than images obtained with a phased-array body coil in PFI.

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Currently, hip sonography is used for early diagnosis and for monitoring developmental dysplasia of the hip (DDH) treatment in many countries. An early pioneer of ultrasonography for early diagnosis of DDH was Graf. Based on the Graf approach, hip ultrasonography is more sensitive and specific than radiography for the diagnosis of DDH, because of its capability to show cartilaginous structures of the hip joint.

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Objective: The aim of this study was to assess pulmonary venous anatomy and to determine the frequency of each drainage pattern in a large cohort using multidetector computed tomography (MDCT) and three-dimensional (3D) imaging.

Material And Methods: The chest CT images of 550 patients were retrospectively reviewed for pulmonary venous anatomy and variant patterns. All CT scans were performed using a 128 detectors row CT scanner after intravenous contrast administration.

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Background & Objectives: Non-alcoholic fatty liver disease (NAFLD) is an important cause of elevated liver functions. There is evidence showing an association between NAFLD and subclinical atherosclerosis independent of traditional risk factors. We undertook this retrospective study to determine the association of Framingham cardiovascular risk scoring system with liver function tests and inflammatory markers and to find the role of liver function tests in determination of CVD risk among non-obese and non-diabetic subjects with non-alcoholic fatty liver disease.

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The ganglioneuroma is a very rare tumor arising from sympathetic nerve system. An asymptomatic retroperitoneal ganglioneuroma was found incidentally in a 35-year-old woman. Ultrasonography, computed tomography, and magnetic resonance imaging showed a retroperitoneal mass extending to the left adrenal gland, and surrounding abdominal aorta, celiac axis, left renal and adrenal arteries, and veins.

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Castleman's disease (CD), also known as angiofollicular lymph node hyperplasia, is an uncommon, lymphoproliferative disorder of unknown etiology, mostly involving the mediastinum. Parenchymal lung involvement of the disease is extremely rare. Intrapulmonary CD has been reported in seven cases in the English literature.

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Recent data have revealed an inverse relationship between insulin resistance, which is associated with fatty liver disease, and blood 25-hydroxy-vitamin D (25(OH)D) levels. The aim of the present study was to determine the association of vitamin D levels with the presence and stage of fatty liver disease among non-obese subjects and to determine the effect of vitamin D status on fatty liver disease development. A total of 613 non-obese (body mass index <30 kg/m(2)) gastroenterology and internal medicine outpatients (472 women and 141 men) were enrolled in the study.

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Background: IGF-I, visceral obesity, IGF binding protein-3 and insulin are reported to be potential risk factors for colorectal carcinogenesis. Many studies report a relation between obesity, insulin resistance and the risk of colon cancer. This study investigates the association between IGF-I levels, insulin resistance and visceral fat accumulation in patients with colon cancer and adenoma.

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Pregnancy-like (pseudolactational) hyperplasia (PLH) is an uncommon lactational change occurring independently from pregnancy and lactation. PLH has been incidentally found during breast biopsies. We report two different cases of PLH with their clinical, radiologic, and pathologic findings.

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The aim of this study was to detect the rate of spontaneous urinary extravasation (SUE) with computed tomography (CT) in patients presenting with acute abdomen. Seven hundred thirteen abdominal CT examinations with i.v.

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Purpose: To evaluate ocular blood flow dynamics by color Doppler ultrasonography (CDU) in patients with end-stage renal disease (ESRD). Additionally, to investigate the effect of dialysis type on ocular blood flow by comparing the findings of peritoneal dialysis (PD) subjects, hemodialysis (HD) subjects, and healthy controls.

Material And Methods: Forty patients (21 HD and 19 PD) and 40 controls were included in the study.

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A spiculated breast lesion on mammogram is highly suggestive of malignancy. However, it can be seen on rare occasions in benign conditions including foreign body associated granuloma. We describe two foreign body reactions in the breast caused by suture materials and describe the clinical, radiological and pathological features.

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Purpose: The aim of this CT-based study was to investigate the frequency of splenic infarction (SI) following conventional open gastrectomy performed for gastric malignant neoplasms.

Methods: 20 patients who underwent subtotal or total gastrectomy, omentectomy, and D2 lymph node dissections preserving the spleen for gastric malignant neoplasms were retrospectively reviewed. Patients with postoperative CT scans within 3 months were enrolled in this study.

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Purpose: The aim of this study was to investigate the frequency with which interatrial shunts are found during routine coronary computed tomography (CT) angiography and to describe imaging characterizations of patent foramen ovale (PFO), atrial septal defect (ASD), and atrial septal aneurysm (ASA).

Materials And Methods: A total of 1081 adult patients were evaluated retrospectively for interatrial shunting; 77 were excluded from the study. CT diagnosis of PFO was defined as (1) a channel-like appearance of the interatrial septum (IAS) and (2) a contrast agent jet flow from the left atrium (LA) to the right atrium (RA).

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Primary appendiceal tumors are rare clinical and radiological entities. We report 4cases including muscinous cystadenoma associated with pseudomyxoma peritonei, muscinous cystadenoma associated with mucocele, low-grade muscinous neoplasia associated with appendicitis in elderly patients, and carcinoid tumor associated with appendicitis in a young adult.

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Introduction: The aim of this study was to investigate the value of renal resistive index (RI) for the assessment of renal colic and to determine whether it is predictive of renal stone disease.

Methods: A total of 70 participants were included in the research study. Group 1 comprised 43 patients with acute unilateral ureteral obstruction due to a stone disease (G1), while Group 2 consisted of seven patients with flank pain without stone disease (G2) and the control group comprised 20 healthy individuals with two normal kidneys (G3).

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A 66-year-old woman presented with back pain and arm claudication. Severe stenosis of the left proximal subclavian artery was detected incidentally by thorax computed tomography. Doppler ultrasonography and phase contrast magnetic resonance angiography (PCMRA) evaluation revealed partial subclavian steal.

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Neurodegenerative and neurometabolic disorders may cause significant morbidity and mortality in children. Imaging is important in early diagnosis of metabolic disorders and in determining the extent of brain injury. Especially after the development of new techniques such as diffusion-weighted magnetic resonance imaging (MRI) and magnetic resonance spectroscopy (MRS), neuroimaging plays more important role in the diagnosis and management of these disorders.

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Purpose: To evaluate ocular pulse amplitude (OPA), IOP values, and hemodynamic changes in the ophthalmic artery, central retinal artery, and short posterior ciliary artery in dipper and non-dipper patients.

Methods: A total of 59 right eye measurements of healthy subjects with normotensive were included to the study. Ambulatory blood pressure (BP) monitoring measurement (ABPM), Doppler imaging, and OPA measurements were performed in the same day.

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Although genetic and chemical studies are most helpful for the diagnosis of metabolic disorders of the brain, there is a role for neuroimaging to quantify the degree of brain involvement and the response to therapy. Also, in some instances the imaging pattern can guide in the selection of genes or gene products to be studied.

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Aim: To analyze the frequency of pleural effusion and the effect on prognosis in children with acute bronchiolitis.

Methods: A total of 69 infants aged 1-24 months with acute bronchiolitis were studied between September 2009 and December 2010. All patients'age, sex, breastfeeding duration, exposure to smoking, history of using vitamin D, symptoms duration, physical examination and laboratory findings were recorded.

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Objective: The aim of this study was to evaluate the interindividual variations of the xiphoid process in a wide adult group using 64-row multidetector computed tomography (MDCT).

Materials And Methods: Included in the study were 500 consecutive patients who underwent coronary computed tomography angiography. Multiplanar reconstruction (MPR), maximum intensity projection (MIP) images on coronal and sagittal planes, and three-dimensional volume rendering (VR) reconstruction images were obtained and used for the evaluation of the anatomic features of the xiphoid process.

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Objectives: The etiology of osteoporosis in asthma is complex as various factors contribute to its pathogenesis. The purpose of our study was to investigate the effects of obesity and inhaled steroids, as well as the severity and duration of asthma, on osteoporosis in postmenopausal asthma patients as compared to healthy controls.

Methods: A total of 46 patients with asthma and 60 healthy female controls, all postmenopausal, were enrolled in our study.

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Non-alcoholic fatty liver disease (NAFLD) is considered a risk factor for atherosclerosis. The aim of the present study was to investigate the association of the pulsatility index (PI) of basilar artery (BA) and carotid intima media thickness (IMT) in diabetic and non-diabetic NAFLD patients. We compared a group of 80 stroke-free, diabetic and non-diabetic NAFLD patients and a control group of 26 healthy subjects without NAFLD.

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