Browsing by Author "Ünal, Ö."

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Acute Mountain Sickness Occurring With Corpus Callosum, Globus Pallidus and Cerebellar Peduncle Involvement: Mri Findings
(2010) Avcu, S.; Arslan, H.; Göktaş, U.; Bulut, M.D.; Ünal, Ö.
Acute mountain sickness (AMS) is a pathological reaction, occurring as a result of failure to adapt to altitude. The main symptoms reported are headache, nausea, vomiting and fatigue. However, high altitude cerebral and pulmonary edema, occurring in AMS, cause potentially fatal consequences. In our 31-year-old case, who is the group leader and activity organizer among nine mountaineers, who climbed Mt. Aĝri{dotless} for winter climbing, nausea, vomiting, unconsciousness, lack of appetite and severe headache have occurred in connection with high altitude at 4200 m. Brain MRI of the patient revealed wide-spread hyperintense lesions at subcortical white matter, corpus callosum, globus pallidi, and bilateral cerebellar peduncles on T2 and FLAIR series. The patient was referred to anesthesia-intensive care unit of our hospital. Since the appearances are demonstrative, MRI findings are presented. © 2010 Elsevier Ireland Ltd.
Bilateral Giant Open Lip Schizencephaly With Associated Cerebral Anomalies: a Case Report
(2009) Avcu, S.; Özen, Ö.; Ünal, Ö.
A nine-month old boy was brought to our hospital with a complaint of growth retardation. On cerebral magnetic resonance imaging examination, giant clefts resulting in the connection of lateral ventricles with subarachnoidal spaces were detected in both cerebral hemispheres, and interpreted as bilateral giant open-lip schizencephaly. Associated anomalies were noted on cerebral magnetic resonance imaging examination. Bilateral thalami were located inferiorly. The caudate nuclei were observed but their configuration was disrupted. The other parts of the basal ganglia including globus pallidi and putamina were absent. We report a case of bilateral giant open-lip schizencephaly with accompanying basal ganglia anomalies. © 2009 Avcu et al; licensee Cases Network Ltd.
Breast Hamartoma: Radiologic Appearances
(2003) Harman, M.; Ünal, Ö.; Uǧraş, S.; Etlik, Ö.; Kotan, Ç.
A Case of Wilms’ Tumor With Spinal Cord Involvement
(2003) Bay, A.; Akbayram, S.; Öner, A.F.; Çaksen, H.; Köseoğlu, B.; Ünal, Ö.
Wilms’ tumor is the most common renal tumor of childhood. However, spinal cord involvement has rarely been reported in children with Wilms’ tumor. In this article, we report a 5-year-old boy with Wilms’ tumor who had the unusual presentation of spinal cord involvement. Our purpose is to emphasize that spinal cord involvement may be seen in children with Wilms’ tumor. © 2003, IOS Press. All rights reserved.
Cerebral Hemiatrophy Associated With Hematological and Developmental Disorders
(2004) Ünal, Ö.; Çaksen, H.; Kiymaz, N.; Dilek, I.; Kayan, M.; Anlar, Ö.
The etiology of cerebral hemiatrophy may be congenital or acquired. Trauma, infection, vascular abnormality, ischemic and hemorrhagic conditions may be the etiologic factors in acquired type. There is limited information about its association with other disorders in the literature. We presented three new cases of cerebral hemiatrophy associated with some hematological and developmental disorders. Cerebral hemiatrophy was associated with thalassemia major in a 10-year-old girl, acute myeloblastic leukemia and Marfan syndrome in a 23-year-old man, and craniosynostosis in a 1-year-old boy. To the best of our knowledge, thalassemia major, myeloblastic leukemia, Marfan syndrome and craniosynostosis have not been reported in cerebral hemiatrophy in the literature. © 2004, IOS Press. All rights reserved.
A Comparison of Effects of Floroquinolones on Fracture Healing (An Experimental Study in Rats)
(2005) Tuncay, I.; Özbek, H.; Köşem, M.; Ünal, Ö.
BACKGROUND: The objective of the present study was to test and compare the effect of floroquinolones on fracture healing as assessed histopathologically. METHODS: A total of twenty five Wistar rats were arbitrarily assigned to five groups with five animals each. Bilateral closed femoral fracture was constructed manually in all groups. The first group did not receive any drug as control (C). The 2nd, 3rd, 4th, and the last group were treated with norfloxacin (N), ofloxacin (O), pefloxacin (P) and ciprofloxacin (Ci) respectively. Antibiotic administration was started on the 7th day after the fracture incident. All the treatments were discontinued twenty days after the incident all the rats were sacrificed, and the fracture calluses together with affected femurs were resected en bloc at the fourth week after fracture. RESULTS: Average healing grades of control group was higher than all the other antibiotic groups. Mean healing grades of control (5 ; n:8), ofloxacin (4.1; n:7), ciprofloxacin (3.9; n:8), norfloxacin (3.4; n:9) and pefloxacin groups (2.6; n:10) were recorded.. Statistically significant differences between antibiotherapy groups (excluding, norfloxacin) and the control group were detected. CONCLUSIONS: The current histopathological study has shown that all the studied floroquinolones retarded fracture healing in rats.
Cranial Ct/Mri Findings in Children With Acute Herpes Simplex Encephalitis
(IOS Press, 2007) Çaksen, H.; Ünal, Ö.; Yilmaz, C.; Güven, A.S.; Özen, Ö.
In this study, cranial computerized tomography (CT) and/or magnetic resonance imaging (MRI) findings were investigated in nine children with acute herpes simplex encephalitis (HSE). HSE was confirmed by polymerase chain reaction. Our purpose was to evaluate the diagnostic value of CT and MRI in the diagnosis of HSE and to determine the widespread of the cranial abnormalities in HSE in childhood. Cranial CT was examined in all children and found to be normal in four children. Cranial MRI was examined in seven children, of whom, three was normal. Temporal involvement was diagnosed in only two children. Our findings revealed that the range of cranial involvement was fairly variable in childhood HSE; aside from typical temporal involvement, cranial images may be normal or widespread involvement including basal ganglia, thalamus, frontal and parietal lobes may be seen in children with HSE. © 2007 IOS Press. All rights reserved.
Intrabiliary Rupture of Liver Hydatid Cyst: a Case Report and Review of the Literature
(2009) Avcu, S.; Ünal, Ö.; Arslan, H.
Herein, we report a 66 year old woman who was diagnosed to have intrabiliary rupture of liver hydatid cyst with demonstrative computed tomography, magnetic resonance imaging, and magnetic resonance cholangiopancreatography findings, with a review of the literature. © 2009 Avcu et al; licensee Cases Network Ltd.
Large Chondrosarcoma of Skull Base: an Unusual Intracranial Tumor in a Young Male
(2007) Avcu, S.; Turan, A.; Ünal, Ö.; Bora, A.
A 25-year-old male presented with headache. He was noted to be neurologically intact on physical examination. He had normal laboratory findings. CT and MR imaging showed a large right temporal mass. Radiological diagnosis was cartilaginous tumor arising from the skull base. The patient underwent surgery at another hospital. The histopathologic features were supporting the radiologic diagnosis being evaluated as mixoid type chondrosarcoma. Although intracranial cartillaginous tumors are rare, the diagnosis can be possible with careful radiological analysis.
Primary Extraskeletal Ewing Sarcoma Originating From Chest Wall in a Child
(TIP ARASTIRMALARI DERNEGI, 2010) Avcu, S.; Akdeniz, H.; Bora, A.; Arslan, H.; Ünal, Ö.
We report the ultrasonography (US) and computed tomography (CT) findings of a rare case of extraskeletal Ewing sarcoma involving the left chest wall with a diameter of 4cm in a 5 years old girl. The lesion was heterogenously hypoechoic on sonography with a lobulated smooth contour. On CT, the lesion had central necrotic areas and was enhancing heterogeneously. With these US and CT findings surgical excision of the tumor was performed. Histopathologically the mass was evaluated as round cell malignant neoplasm (Ewing tumor/ "Askin tumor"/ primitive neuroectodermal tumor (PNET)). Chemotherapy and radiotherapy were planned to the patient.
The Role of Power Doppler Sonography in the Evaluation of Superficial Soft Tissue Abscesses
(1998) Arslan, H.; Sakarya, M.E.; Bozkurt, M.; Ünal, Ö.; Dilek, O.N.; Harman, M.
Objective: To evaluate the efficacy of power Doppler ultrasonography in depicting increased vasculature and hyperemia around the superficial soft tissue abscess. Materials and methods: 21 patients with soft tissue abscess were evaluated with gray scale imaging, color Doppler sonography, power Doppler sonography and computed tomography. In each case attempts were made using power Doppler sonography to demonstrate any areas of increased vascularity around the lesion. The results were compared with computed tomographic findings. Results: Peripheral hyperemia and increased vasculature were demonstrated with power Doppler sonography in 19 of 21 patients with soft tissue abscess. The hyperemic area demonstrated around the wall of the abscess by power Doppler sonography was similar to the enhanced area shown by computed tomography performed after contrast administration. Conclusion: Power Doppler sonography shows increased vasculature and hyperemia in the wall of abscesses. Therefore, power Doppler sonography can be used to assist with the diagnosis of superficial soft tissue abscess.
The Value of Diffusion-Weighted Imaging in the Diagnosis of Active Sacroiliitis
(Yuzuncu Yil Universitesi Tip Fakultesi, 2019) Akdeniz, H.; Avcu, S.; Ünal, Ö.; Bora, A.; Karahocagil, M.K.
The aim of this study was to evaluate the effectiveness of diffusion-weighted imaging (DWI) in the diagnosis of active sacroiliitis. In this prospective study, 66 patients with clinical prediagnosis of active sacroiliitis were evaluated. Four patients who were not suitable for MRI examination were excluded. Twenty subjects with no complaint of low back pain constituted the control group. All of the patients underwent sacroiliac MRI examination performed with a 1.5 Tesla unit using phase array body coil. Before DWI, oblique axial and coronal T1 and T2-weighted TSE followed by STIR sequences were obtained. DWI examinations were obtained on SS-SE EPI sequence through chemical shifting selective fat suppression technique. ‘b’ value was chosen as 50, 400 and 800 mm2/sec and total scanning time was 114 seconds. ADC calculations were made from the ADC maps by placing ROI on the active inflammatory regions in case group and on sacrum and iliac bones in control group. Of the 62 cases, 42 had a radiologic diagnosis of active sacroiliitis, and 20 were regarded as normal. Mean ADC values in 42 patients with active sacroiliitis were significantly higher than control group. The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy rate of DWI in the diagnosis of active sacroiliitis were found to be 100% for all. The cut-off ADC value was 0.94 x 10-3 mm2/sec for right sacroiliitis and 0.89 x 10-3 mm2/sec for left sacroiliitis. We believe that DWI and ADC quantification can be used successfully for the early diagnosis and follow-up of active sacroiliitis. © 2019, Yuzuncu Yil Universitesi Tip Fakultesi. All Rights Reserved.