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Öğe Adölesanda falangial osteoid osteom(Cause Pedia, 2015) Öztürk, Mehmet; Sığırcı, AhmetOsteoid osteom, sıklıkla genç erkeklerde görülen ve büyüyen iskeleti etkileyen benign kemik tümörüdür. Radyolojik olarak çoğunlukla alt ekstremitede ağrı ile birlikte sklerozla çevrili nidus şeklinde görülür. Benign kemik tümörlerinin %11-12‘sini oluşturur. Osteoid osteom, falankslarda oldukça nadir görülür. Bu yazıda, sağ el üçüncü parmak proksimal falanksda 1,5 aydır devam eden ağrı ve şişlik şikayetiyle başvuran 15 yaşında erkek bir hastada falangial osteoid osteomu sunmayı amaçladık.Öğe Cerebral atrophy and subdural haemorrhage after cerebellar and cerebral infarcts in an 8 month old child after having been stung by a scorpion(BMJ Case Rep, 2014) Sığırcı, Ahmet; Öztürk, Mehmet; Yakıncı, Mehmet CengizA scorpion sting causing cerebellar and cerebral infarctions with corpus callosum involvement and bilateral cerebral atrophy with subdural haemorrhage in an 8-month-old girl, has not been previously described to the best of our knowledge.Öğe CT angiography and Doppler ultrasound evaluation of congenital portosystemic shunts(2022) Akdulum, İsmail; Akyüz, Melih; Gürün, Enes; Öztürk, Mehmet; Sığırcı, Ahmet; Boyunağa, Öznur LemanAim: The aim of the study was to describe the Doppler ultrasonography and computed tomography findings that should be considered in the diagnosis and treatment of congenital portosystemic shunts. Methods: Archive retrospectively scanned. In consideration of shunts: communication type and aneurysm were defined. Additional imaging modalities were utilized. Results: 11 patients were included in the study. The ages ranged from 0 to 158 months. There were two patients with shunt connecting segment-4 portal vein - middle hepatic vein, two patients with segment-3 portal vein - left hepatic vein, two patients with left portal vein – middle hepatic vein, two patients with portal vein - left renal vein, two patients with portal vein -inferior vena cava, and one patient with portal vein - perirectal venous plexus. Conclusion: Some classifications used in congenital portosystemic shunts are insufficient in guiding treatment. Elaborate definition of the imaging findings including the involved vessels, type of communication, and presence of aneurysm or dilated vessels is of the prime importance for tailoring clinical management of the patients.Öğe Evaluation of aqueductal cerebrospinal fluid flow dynamics withphase contrast cine magnetic resonance imaging in normalpediatric cases(Clinical Imaging, 2016) Öztürk, Mehmet; Sığırcı, Ahmet; Ünlü, SerkanPurpose: This study aimed to determine differences according to age groups and gender in the parameters of aqueductal cerebrospinal fluid (CSF) flow in childhood using phase-contrast cine magnetic resonance imaging (MRI) method. Materials and methods: This prospective study included 47 boys and 36 girls for a total of 83 healthy children. The cases were divided into three groups depending on age as infants (1–12 months), children (12–120 months), and adolescents (120–204 months). To quantitatively evaluate CSF flow, images in the transverse plane were taken at the cerebral aqueduct level using the phase-contrast MR angiography technique in a 1.5-T MR unit. Peak and average velocity (cm/s), cranial direction, caudal direction and net volume (ml), and aqueduct area (mm2 ) were calculated. To assess differences between the groups, a one-way analysis of variance and least significant difference tests were used. Results: A statistically significant difference was determined between children and adolescents in peak velocity and caudal direction volume (P=.012 and P=.039, respectively) and between infants and children in cranial direction volume (P=.036). Peak velocity, cranial direction, and net volume were higher in boys (P=.050, P= .016, and P=.029, respectively). There were no differences by age and gender in the aqueduct area. Conclusion: In conclusion, this study determined the normal values for the CSF flow parameters of velocity, volume, and aqueduct area using phase-contrast MRI in healthy children. Velocity and volume parameters varied according to age and sex and were not affected in the aqueductal area.Öğe MRI and MR spectroscopy findings of a case of subacute sclerosing panencephalitis affecting the corpus callosum(BMJ Case Reports, 2015) Öztürk, Mehmet; Sığırcı, Ahmet; Yakıncı, Mehmet CengizSubacute sclerosing panencephalitis (SSPE) is a rare, slowly progressive, fatal, inflammatory and neurodegenerative disease that is seen mostly in children and young adolescents, and primarily affects the parieto-occipital lobes. The corpus callosum, cerebellum and basal ganglia are less frequently involved. MR spectroscopy (MRS) may illustrate the pathophysiological features of SSPE. To the best of our knowledge, this is the second report of MRS findings of corpus callosum involvement in a stage 3 SSPE case.Öğe Multiseptate gallbladder in an adolescent patient with chronic abdominal pain: ultrasonography and magnetic resonance cholangiopancreatography findings(Turgut Özal Tıp Merkezi Dergisi, 2016) Öztürk, Mehmet; Sığıcı, AhmetDear Editor, Multiseptate gallbladder (MSG) is a rare congenital anomaly. MSG's clinical and pathological findings were first described by Simon and Tandon in 1963 (1). Although patients are usually asymptomatic, they can present with nonspecific symptoms such as chronic right upper quadrant pain, nausea, and vomiting. In this article, we aim to present the ultrasound (US) and magnetic resonance cholangiopancreatography (MRCP) findings of a 12-year-old girl with MSG, who had chronic right upper abdominal pain. A 12-year-old girl, who had complaints of ongoing nausea and vomiting for 2 years accompanied by chronic right upper quadrant pain, was admitted to our hospital. Her medical story did not include fever, jaundice, constipation, diarrhoea, acholic stool, sickle-cell anaemia or other blood disorders. On physical examination, we observed tenderness in the right upper quadrant. The patient's complete blood count, urinalysis, transaminases, bilirubin, amylase, lactic dehydrogenase, and alkaline phosphatase levels were normal. We did not detect any parasites in the microscopic examination of the excrement sample.Öğe Multiseptate gallbladder in an adolescent patient with chronicabdominal pain ultrasonography and magnetic resonancecholangiopancreatography findings(Journal of Turgut Ozal Medical Center, 2016) Öztürk, Mehmet; Sığırcı, AhmetA 12-year-old girl, who had complaints of ongoing nausea and vomiting for 2 years accompanied by chronic right upper quadrant pain, was admitted to our hospital. Her medical story did not include fever, jaundice, constipation, diarrhoea, acholic stool, sickle-cell anaemia or other blood disorders. On physical examination, we observed tenderness in the right upper quadrant. The patient's complete blood count, urinalysis, transaminases, bilirubin, amylase, lactic dehydrogenase, and alkaline phosphatase levels were normal. We did not detect any parasites in the microscopic examination of the excrement sample. The abdominal US applied on an empty stomach (Logiq 8S, GE Healthcare, Wisconsin, USA) showed multiple septations 1.6x3.8 cm in size located inside lumen in the gallbladder causing honeycomb formations. Color Doppler US did not show blood supply in the septa. The gallbladder wall thickness was normal and there was no intraluminal stones or mud. Intra- and extrahepatic bile ducts were also normal (Figures 1a and 1b). The US applied after approximately an hour of food intake did not reveal any changes with regards to the size and wall thickness of the gallbladder though the patient developed pain in the right upper quadrant. The MRCP (1.5 T MR, Siemens, Somatom, Germany. 3D, TSE coronal, TR 1800 ms, TE: 350 ms, FA: 908, thickness: 3 mm, NSA: 2, FOV: 300/300 mm, image matrix: 118/512) evaluation displayed irregularities in the gallbladder wall as well as hypointense septa extending into the lumen. There were no abnormalities in the bile duct or pancreatic anomalies (Figures 2a and 2b). Chronic abdominal pain solely induced by the gallbladder is rare in childhood. Cholecystitis and cholelithiasis, on the other hand, are usually accompanied by systemic diseases, bacterial and parasitic infections, haemolytic conditions or chronic gastrointestinal diseases. Although single or multiple gallbladder septations are uncommon, they can bring about recurrent right upper quadrant pain (2, 3).Öğe Normal filum terminale thickness in newborns: sonographic screening(2016) Öztürk, MehmetAbstract:Amaç: Filum terminale, 5-20 mikron kalınlığında uzunlamasına demetlerden oluşan ve kollajen bantlarla birbirlerine bağlanmış fibrovasküler bir yapıdır. Filum terminale L5 ile S3 arasında bir seviyede sonlanmaktadır. Bu çalışmada amacımız yenidoğanda sonografik olarak normal filum terminale kalınlığını saptamak. Gereç ve Yöntem: Bu prospektif çalışmaya 250'si erkek ve 250'si kız olmak üzere toplam 500 sağlıklı matur yenidoğan olgu dahil edildi. Sonografik İncelemede; dekübit pozisyonda, servikal bölgeden itibaren sakral bölgeye kadar tüm vertebra ve spinal kord transvers ve sagittal planlarda tarandı, kord pulsasyonu ve konu medüllaris seviyesi değerlendirildi. Filum terminale kalınlığı ultrason ile konus medüllaristen ortalama 1.5 cm uzaklıkta, sagittal planda ölçülmüş olup, üç farklı ölçümün ortalaması alındı Olguların tamamında ve cinsiyetlere göre ayrı ayrı ortalama değerler hesaplandı. Grupların karşılaştırılmasında Independent-Samples T testi Bootstrap sonuçlarıyla birlikte kullanıldı. Bulgular: Yaşın maksimum- minimum değerleri erkeklerde 30- 3 gün, kızlarda 30- 1 gün ve tüm yenidoğanlarda ise 30- 1 gün bulundu. Cinsiyet grubları arasında yaşa göre istatiksel anlamlı farklılık saptanmadı Filum terminale kalınlığı erkeklerde 1,04± 0,24 mm, kızlarda 1,06± 0,17 mm ve tüm yenidoğanlarda ise 1,05± 0,21 mm bulundu. Cinsiyete göre grublarası istatiksel anlamlı farklılık saptanmadı. Sonuç: Sonuç olarak yenidoğanda filum terminale kalınlığı ortalama 1,05 mm ölçülmüştür. Bu değer filum terminalede kalınlaşmaya yol açan patolojilerin tanısında, eşik değer olması açısından önemlidirÖğe Posterior fossa horns; a new calvarial finding of mucopolysaccharidoses with well-known cranial MRI features(2020) Damar, Çağrı; Derinkuyu, Betül; Kılıçkaya, Muazzez; Öztürk, Mehmet; Öztunalı, Çiğdem; Alımlı, Ayşe; Boyunağa, Öznur; Uçar, Murat; Ezgü, Fatih; Tümer, Leyla; Börcek, Alp Özgün; Sığırcı, AhmetAbstract: Background/aim: Mucopolysaccharidoses (MPS) are a group of hereditary metabolic diseases. The aim of this study was to share the previously unreported calvarial finding of internal hypertrophy of the occipitomastoid sutures (IHOMS) together with some other wellknown cranial MRI findings in this patient series. Materials and methods: A retrospective evaluation was conducted of 80 cranial MRIs of patients who had been diagnosed and followed up with MPS from 2008 to 2019 in our center. Of these patients, 11 had Hurler, 14 had Hunter, 24 had Sanfilippo, 15 had Morquio, 14 had Maroteaux–Lamy, and 2 had Sly disease. The cranial MRIs were assessed in two main groups as parenchymal intradural cranial MRI findings and extradural calvarial findings. Results: The most common parenchymal intradural cranial MRI findings were white matter signal alterations (n = 51, 63%) and perivascular space enlargements (n = 39, 48%). The most common extradural calvarial findings were J-shaped sella (n = 45, 56%) and tympanic effusion (n = 44, 55%). Although IHOMS was defined in a relatively small number of the patients (n = 12, 15%), the prevalence rate was high in MPS type I (n = 6, 54%). Conclusion: The abnormal cranial MRI findings of the MPS patients, including the newly identified IHOMS, may provide diagnostic clues to differentiate the type of the disease in radiological imaging.Öğe A rare cause of embolism in the popliteal artery of an adolescent ruptured cardiac hydatid cyst(The Anatolian Journal of Cardiology, 2015) Öztürk, Mehmet; Sığırcı, Ahmet; Dağlı, Adile FerdaA 17-year-old male presented to the emergency department with complaints of pain, paleness, and coldness in his left leg. In the peripheral angiography, total occlusion in the left popliteal artery was observed with distal collateral filling (Fig. 1). On the thoracic CT, a bilobular ruptured cystic lesion 0.9 × 2.7 cm in size in the interventricular septum partially extended to the left ventricle (Fig. 2). The patient was admitted to emergency surgery. A capsule consistent with a hydatid cyst was removed from the popliteal artery, which was confirmed pathologically (Fig. 3). To the best of our knowledge, this is the first reported case of popliteal artery embolism in an adolescent patient because of rupture of cardiac hydatid cyst. In cases of vascular embolism developing suddenly in the extremities, it will be useful to consider ruptured cardiac hydatid cyst in the differential diagnosis, particularly in endemic regions.Öğe A rare cause of infant facial paralysis atypical teratoid rhabdoid tumour located in the cerebellopontine angle(Springer Plus, 2015) Öztürk, Mehmet; Sığırcı, Ahmet; Karadağ, NeşeAtypical teratoid rhabdoid tumour (ATRT) is a rare malignant tumour of the central nervous system with embryonal roots. The majority are seen in early childhood and location is often in the posterior fossa. Surgery, radiotherapy and chemotherapy are used in treatment. Knowledge of the localisation of the mass preoperatively is necessary for direction of the chemoradiotherapy and sufficient resection in surgery. Differentiation from other brain tumours is important because of poor prognosis and differences in treatment. In this paper it was aimed to present the clinical and radiological findings of an ATRT located in the cerebellopontine angle, which occurred with facial paralysis.Öğe A rare variant of type I truncus arteriosus truncus arteriosus with anterior origin of a main pulmonary artery(Echocardiography, 2015) Çelik, Serkan Fazlı; Karakurt, Cemşit; Elkıran, Özlem; Öztürk, Mehmet; Görmeli, Ayşe CemileTruncus arteriosus (TA ) is an uncommon con-genital cardiovascular anomaly that is character-ized by a single arterial trunk arising from thenormally formed ventricles by means of a singlesemilunar valve. The anomaly is thought to resultfrom incompl ete or failed septation of the embry-onic truncus arteriosus. Truncus arteriosus withanterior origin of a mai n pulmonary arte ry is avery rare condition. In this report we present anewborn who has a truncus arteriosus with ante-rior origin of a main pulmonary artery.Öğe A rare variant of type I truncus arteriosus truncus arteriosus with anterior origin of a main pulmonary artery(Echocardiography, 2015) Çelik, Serkan Fazlı; Karakurt, Cemşit; Elkıran, Özlem; Öztürk, Mehmet; Görmeli, Cemile AyşeTruncus arteriosus (TA) is an uncommon congenital cardiovascular anomaly that is characterized by a single arterial trunk arising from the normally formed ventricles by means of a single semilunar valve. The anomaly is thought to result from incomplete or failed septation of the embryonic truncus arteriosus. Truncus arteriosus with anterior origin of a main pulmonary artery is a very rare condition. In this report we present a newborn who has a truncus arteriosus with anterior origin of a main pulmonary artery.Öğe Tansiyon pnömotoraksa sebep olan akciğer kist hidatiği(Cause Pedia, 2015) Öztürk, Mehmet; Sığırcı, AhmetKist hidatik, Echinococcus granulosus’un neden olduğu paraziter bir hastalıktır. En sık karaciğer ve akciğerlere yerleşirler. Akciğer kist hidatiğinin en sık görülen komplikasyonu bronş içine rüptürüdür. Hidatik kist rüptürüne bağlı tansiyon pnömotoraks ise çok nadir görülen bir komplikasyondur. Tanı, klinik, radyolojik görüntüleme yöntemleri ve serolojik testlerle konulur. Akciğer kist hidatiğinin tedavisi öncelikli olarak cerrahidir. Bu yazıda, bir çocuk hastada plevral boşluğa açılmış ve tansiyon pnömotoraksa neden olmuş akciğer kist hidatiğinin klinik ve radyolojik bulgularını sunmayı amaçladık.Öğe Tuberculous arthritis in the elbow joint in an adolescent(Aves press ltd, c/o edward c dıckınson, flat 3, bolsover court, 19 bolsover rd, eastbourne, bn20 7jg, england, 2018) Öztürk, Mehmet; Akatlı, Ayşenur; Sığırcı, Ahmet; Akpolat, NusretMusculoskeletal system tuberculosis (TB) accounts for approximately 10% of all TB cases, excluding those involving pulmonary TB. Elbow TB is extremely rare and is seen in 2%-5% of musculoskeletal system cases. The diagnosis of TB arthritis is very difficult because its onset is insidious and progress is slow and there are nonspecific local and systemic symptoms. A delay in treatment can result in irreversible osteoarticular destruction. This paper presents the clinical and radiological findings of a 12-year-old adolescent patient with elbow TB arthritis.Öğe Türk dış politikasındaki açılım bağlamında türkiye-sahraaltı afrika ilişkileri: 2005-2011(İnönü Üniversitesi / İİBF, 2010) Öztürk, MehmetTürkiye ile Sahraaltı Afrika ülkelerinin yaşadıkları uzun süreli ekonomik ve siyasal istikrarsızlıklar nedeniyle taraflar arasında anlamlı bir ilişki kurma fırsatı oluşmamıştır. Bununla birlikte son on yılda Sahraaltı Afrika ülkelerinin giderek daha fazla dünyanın gündemine gelmesi ve Türkiye‟nin AK Parti hükümetleriyle birlikte siyasal istikrar ve ekonomik kalkınma sürecine girmesi üzerine Türkiye-Sahraaltı Afrika ilişkilerinde kayda değer bir canlanmaya neden olmuştur. 2005 yılının Türkiye‟de “Afrika yılı” ilan edilmesinden itibaren, Türk dış politikasında pro-aktif politikaya geçişin önemli ve belirgin bir yansıması da Sahra-altı Afrika ile ilişkilerde gözlenmiştir. Söz konusu ilişkiler zirve toplantılarından üst düzey ziyaretlere, yeni büyükelçiliklerin açılmasından Türkiye‟nin Afrika örgütlerine ortak üye olmasına, ekonomik ve ticari faaliyetlerden insani yardım girişimlerine kadar birbirini tamamlayan ve kararlı adımlarla ilerlemektedir. Örneğin Türkiye, Güney Afrika ile stratejik ortaklık yolunda ilerleyen ilişkilerinin yanında Somali‟de yaşanan insani krizde önemli bir görev üstlenmiştir. Bu çalışmada Türkiye‟nin Sahra-altı Afrika ülkeleriyle ilişkilerini belirleyen temel parametreler üzerinde durulacaktır. Bu bağlamda, Türkiye‟nin Afrika açılımını etkileyen bölgesel ve küresel gelişmeler de ele alınacaktır.Öğe Ultrasonographic measurement of palatine tonsil size and its correlation with body-mass index and hepatosteatosis in adolescents(Turgut Özal Tıp Merkezi Dergisi, 2017) Öztürk, MehmetAbstract Aim: To research the correlation between body-mass index (BMI) and hepatosteatosis with palatine tonsil size measured using transcervical ultrasonography (TCU) in adolescents. Material and Method: This prospective study included 56 males and 41 females for a total of 97 adolescents. Cases were divided into three groups as those healthy according to BMI and hepatosteatosis (Group 1), those obese without hepatosteatosis (Group 2) and those obese with hepatosteatosis (Group 3). Palatine tonsil size was assessed with a 4.8-11.0 MHz linear transducer, while liver echo was assessed with a 3.5-5 MHz convex transducer. Cut-off values for variables in the groups were analyzed with Receiver Operating Curve. Results: The mean ages in Groups 1, 2 and 3 were 159.67±24.9, 159.17±24.7 and 160.7±25.8 months, respectively. Tonsil volumes were 3.18±0.5, 3.73±0.9 and 4.45±0.7 ml in Groups 1, 2 and 3, respectively and there was a statistically significant difference between the groups (p values for Groups 1-2 0.011, Groups 1-3 <0.001 and Groups 2-3 0.002). The sensitivity and specificity of threshold tonsil volume for differentiation between groups was calculated as 50% and 90% for the threshold value of 3.73 ml between Groups 1 and 2, 86.7% and 100% for the threshold value of 3.88 ml between Groups 1 and 3 and 86.7% and 63.3% for the threshold value of 3.88 ml between Groups 2 and 3. Conclusion: TCU is beneficial method to objectively assess palatine tonsil volume. There is a positive increasing correlation between palatine tonsil volume with BMI and hepatosteatosis in adolescents. Keywords: Palatine; Tonsil; Size; Adolescents; Ultrasonography; Hepatosteatosis.
