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Öğe Acceptable radiation leakage of microwave ovens on pregnant and newborn rat brains(1997) Inalöz S.S.; Daşdağ S.; Ceviz A.; Bilici A.The present article was intended to investigate the possible effects of the acceptable radiation leakage of microwave ovens on pregnant and new-born rat brains. Twenty-seven pregnant Wistar-albino rats were separated into three groups (n = 9), a control group (sham-exposed) and two experimental groups. The experimental gravid rats were confined in Plexiglas cages and placed next to the closed door of a microwave oven (power-output: 550 W). The NIR 15 (NIR: non-ionising radiation) group of gravid rats were exposed to the leakage of microwave ovens daily for 15 minutes whereas the NIR 30 group was exposed daily for 30 minutes during their pregnancies. The most striking changes were observed in the NIR 30 group of rats. Congestive vessels, edema and degenerative neurones were noticed in all experimental dams. Chronic inflammatory cell infiltrate, and focal necrosis of neurones were seen only in the NIR 30 group of dams. Progressive edema and conspicuous congestive vessels were seen in the offspring of both experimental groups. Chronic inflammatory cell infiltrate, haemorrhage, necrotic neural tissues, and degenerative neurones with a reactive glial proliferation were observed only in the offspring of the NIR 30 group.Öğe Diagnostic value of color doppler ultrasonography in hepatocellular carcinoma(1996) Goral V.; Mumbuc L.; Bilici A.; Kemaneci A.A differential diagnosis of liver tumors was made on the basis of the pattern of blood flow within and around tumors on color Doppler flow images. The study comprised 47 patients with liver mass lesions; 22 patients had hepatocellular carcinoma (HCC), 15 had hemangiomas, 4 had metastatic liver cancers, 3 had liver abscess, 3 had liver cysts. Color Doppler flow imaging and Doppler flow velocity were established and compared according to the Tanaka classification. Color Doppler flow imaging was observed in masses of all of 22 patients with HCC, of 3 patients with liver metastasis, of 3 patients with hemangiomas. Doppler signals were not observed in 1 patient with liver metastasis, in 3 patients with liver abscess, in 3 patients with liver cysts. The mean of maximum blood flow velocity was 80.7 cm/s in HCC, 49.3 cm/s in metastatic liver cancers, 10.3 cm/s in hemangiomas. A basket pattern (a fine blood-flow network surrounding the tumor nodule) was observed in 17 (77%) of the 22 HCC. An image of vessels within the tumor blood flow that runs into and branches within the tumor was observed in 5 (23%) of the 22 HCC. These two findings were observed only in HCC. In three of 15 hemangiomas, a spot pattern (color-stained dots or patches in the central region, of the tumor) was seen. When the blood flow wave pattern was examined, constant leaves could be seen in 6 cases (27.4%), the blood flow also showed pulsating waves in 16 (73.6%) cases with HCC. According to these results, HCCs have some characteristic appearances on color Doppler flow images. Therefore color Doppler ultrasonography can aid in the differential diagnosis of liver mass lesions.Öğe Effects of cervical degenerative changes on vertebral artery blood flow in patients with and without vertigo(2003) Çevik R.; Bilici A.; Can A.; Kocamaz S.; Gür A.; Nas K.Vertigo is an important clinical finding of vertebrobasiller insufficiency syndrome which occurs as a result of cervical spondylosis. The aim of present study was to investigate blood flow velocity of vertebral artery in patients having cervical spondylosis with and without vertigo by color Doppler ultrasonography, and its relation with degenerative changes of cervical spine. Thirty patients with vertigo due to spondylosis (I group), 20 patients with spondylosis and without vertigo (II group), and 20 healthy controls were included to the study. Maximum systolic velocity and end diastolic velocity of vertebral arteries were measured bilaterally in all subjects by color Doppler ultrasonography. Mean ages of study groups were 49.2 ± 8.5, 47.35 ± 8.23 and 45.63 ± 4.75, respectively There were significant differentiations among three groups in all VA blood flow velocities (p<0.01 and p<0.001). There were significant correlations between stage of cervical degenerative changes and all VA blood flow velocities (p<0,001). In conclusion, color Doppler ultrasonography, which is non-invasive and uncomplicated tecnique, is a useful method to evaluate vertebral artery blood flow velocity in patients having cervical spondylosis with vertigo.Öğe The effects of the microwave oven on pregnant and newborn rat kidneys(1997) Inaloz S.S.; Dasdag S.; Aslan A.; Bilici A.; Yayla M.Background: The increasing use of microwave radiation for industrial, scientific, medical and domestic purposes has resulted in growing concern about the biological effects of microwaves on man. Objectives: In this study, teratogenic effects of the microwave oven were investigated histologically on pregnant and newborn rat kidneys. Methods: Twenty-four pregnant Wistar- albino rats were separated into three groups (n=8), a control group (sham- exposed) and two experimental groups. The experimental gravid rats were confined in plexiglas cages which were placed next to the closed door of a microwave oven (power-output: 550W). In the first experimental group, the gravid rats were exposed to the microwave oven daily for 15 minutes whereas the gravid rats were exposed daily for 30 minutes in the second experimental group. Results: The physiological dilation of the renal tubules was observed in all dams. There was a positive correlation between the duration of exposure and the severity of necrosis. Necrosis of renal tubules together with normal glomeruli and stromal cells were seen in the first group of litters. Pronounced necrotic renal tissues and adrenal glands were observed only in the fitters of the second group. Conclusion: The teratogenic effects of the MW oven was observed especially in the second group of litters Nevertheless, pregnant users are not exposed to microwave radiation under the same conditions as in our experiment.Öğe Endoscopic treatment of complete posterior urethral obliteration.(1998) Sahin H.; Bircan M.K.; Akay A.F.; Göçmen M.; Bilici A.The management of posterior urethral obliteration remains a surgical challenge. We report our experience with 5 patients treated endoscopically for posterior urethral obliteration. We performed endoscopic reconstitution of the urethra followed by temporary self-dilation in five patients with complete short posterior urethral obliteration (less than 3 cm). Average follow-up is 31 months (21-53 months). During follow-up 4 of these patients required 1 or 2 internal urethrotomies within the first 4 to 24 months after treatment. But, any urethral stricture has not been established until the average 23.2 months (21 to 27 months). The other fifth patient has no complication at twenty-first month postoperatively. One patient had impotence after the injury. Impotence continued and total incontinence developed after the endoscopic treatment. We believe that endoscopic treatment followed by temporary self-dilation could be a reasonable alternative to open urethroplasty in patients with an impassable short stricture.Öğe Pelvic and bilateral symetric lower extremities involvement of extensive fetal cystic lymphangioma: A case report(Duzce University Medical School, 2015) Alan B.; Dusak A.; Durmaz M.S.; Bilici A.Extensive fetal cystic lymphangioma is a rare congenital malformation of the lymphatic system. Their prognosis depends on the size and location of the lesions as well as other accompanying anomalies. Our case was 35 years, fetal BPD was 27 weeks. Herein, we present a case of extensive fetal cystic lymphangioma that began at the pelvic area and symmetrically spanned the bilateral proximal and distal lower extremities. Numerous extensive and sharply circumscribed, thin walled multilobular cystic lesions in different sizes were observed in the subcutaneous superficial and deep soft tissue beginning from the pelvic area and extending to both lower extremities to the distal in the fetüs. To our knowledge, a case involving both extremities has not yet been reported in the literature. © 2015 Düzce Medical Journal.Öğe Radicular compression due to herniated intradiscal gas(Turkish Neurosurgical Society, 1997) Ceviz A.; Bilici A.; Simsek M.A case in which epidural collection of gas compressed the left S1 nerve root and thecal sac, and produced symptoms and signs identical to those of a herniated nucleus pulposus is presented. Gas collection within the epidural space is demonstrated radiologically. The pathophysiology and management of an epidural collection of gas compressing nerve root and thecal sac are considered based on a review of the literature.Öğe The relation of coronary artery disease with Doppler flow velocity and resistance index in cases without significant carotid artery stenosis(2001) Ulgen M.S.; Bilici A.; Acar M.; Onder H.; Sucu M.; Toprak N.OBJECTIVE: Atherosclerosis causes functional vasomotor changes as well as well as atheromatous carotid plaques and luminal stenosis resulting in mechanical effect. The relation between functional vasomotor changes in carotid arteries and extent of coronary artery disease is unknown. In our study, the probable relationship between carotid arterial flow velocities and resistance indexes (RI) with the extent of coronary artery disease (CAD) in patients who do not have significant carotid luminal stenosis was evaluated. METHODS: One hundred and fourteen patients (74 males, mean age 53+/-10 years, range 33-72 years) were studied. All patients underwent color Doppler sonography before coronary angiography. Peak systolic flow velocity, end-diastolic flow velocity and resistance index (RI) of right and left common carotid and internal carotid and internal carotid arteries were measured by color Doppler sonographic technique. Doppler parameters were correlated with the extent of CAD and left ventricular ejection fraction. RESULTS: Patients were classified on the basis of presence of significant CAD and the number of affected coronary arteries. Thirty-three patients did not have (normal group) and 81 patients had significant coronary arterial stenosis (22 patients with one-vessel disease, 27, with two-vessel disease and 32 patients with three-vessel disease). Flow velocities were the highest in normal group but the lowest in CAD patients, especially when 3 coronary arteries were affected. Correlation analysis demonstrated negative relationship of age, ejection fraction and number of affected coronary arteries with end-diastolic flow velocity, but positive and significant correlation with RI value. CONCLUSION: Our study is the first on this object. The results suggest that presence and extent of CAD changes flow velocities and RI values of common and internal carotid arteries. However, further investigations are required before these parameters can be applied as diagnostic criteria.
