Browsing by Author "Erdoǧan, Cüneyt"
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Item Choosing the appropriate side for subcutaneous port catheter placement in patients with mastectomy: Ipsilateral or contralateral?(Springer, 2017-01-31) Hacıkurt, Kadir; Doğan, Nurullah; Şanal, Bekir; Nas, Ömer Fatih; Kaya, Ahmet; Özkaya, Güven; Dündar, Halit Ziya; Erdoǧan, Cüneyt; Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.; Uludağ Üniversitesi/Tıp Fakültesi/Biyoistatistik Anabilim Dalı.; Uludağ Üniversitesi/Tıp Fakültesi/Genel Cerrahi Anabilim Dalı.; 0000-0002-8813-6513; 0000-0003-0297-846X; 0000-0003-1455-6918; AAS-5392-2021; AAG-8561-2021; A-4421-2016; 51864050100; 56659105900; 16316866500; 55453773300; 8293835700To evaluate long-term clinical follow-up results of implanting subcutaneous port catheters (SPCs) on ipsilateral or contralateral with mastectomy side in patients with axillary lymph node dissection. A total of 73 patients composed of ipsilateral (34 catheters) and contralateral (39 catheters) groups, with SPCs were included. All patients had lumpectomy or modified radical mastectomy for breast cancer. Ipsilateral and contralateral groups had similar patient characteristics. Five late complications were seen in the ipsilateral group and 2 late complications in the contralateral group. No statistical significant difference was seen between two groups in regard to late complications. Four complications of the ipsilateral group were classified as major group C and 1 as major group D, while 1 complication of the contralateral group was classified as minor group B and 1 as major group C according to Society of Interventional Radiology (SIR) classification. No statistical significant difference was seen between complication rates of two groups in regard to SIR classification. SPC related complications do not differ in regard to ipsilateral or contralateral side selection on mastectomized patients with breast cancer and lymph node dissection. SPCs can be implanted on ipsilateral or contralateral sides of the operation in these patients.Item The contribution of diffusion-weighted MR imaging in multiple sclerosis during acute attack(Elsevier, 2008-03) Yurtsever, İsmail; Hakyemez, Bahattin; Taşkapılıoğlu, Özlem; Erdoǧan, Cüneyt; Turan, Ömer Faruk; Parlak, Müfit; Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.; Uludağ Üniversitesi/Tıp Fakültesi/Nöroloji Anabilim Dalı.; 0000-0002-3425-0740; 0000-0001-7482-668X; AAG-8521-2021; AAK-6623-2020; AAI-2318-2021; 8535041400; 6602527239; 23037226400; 8293835700; 7003589220; 23037113500Purpose: The aims of the study are firstly, to determine the difference in diffusion-weighted imaging (DWI) in normal appearing white matter (NAWM) between patients with acute multiple sclerosis (MS) and controls; secondly, to determine whether there is a correlation between EDSS scores and DWI in acute plaques and also NAWM. Materials and method: Out of 50 patients with acute MS attack, 35 patients had active plaques with diffuse or ring enhancement on postcontrast images. Eighteen healthy volunteers constituted the control group. While 26 of 35 had relapsing-remitting, 9 had secondary progressive MS. Apparent diffusion coefficients (ADC) of the active plaques, NAWM at the level of centrum semiovale and occipital horn of lateral ventricle in the patients and NAWM in control group were measured. ADC values of active plaques were compared with WM of the patients and the control group. The relationship of ADC value of active plaques and WM in MS with expanded disability status scale (EDSS) was investigated by using Mann-Whitney U-test. Results: Of 63 plaques totally, 26 and 37 of the active plaques had diffuse and ring enhancement, respectively. There was no statistically significant difference between ADC value of active plaques and EDSS (p > 0.05). However, there was a statistically significant difference between ADC value of WM occipital horn and EDSS (p < 0.05). ADC value of active plaques were higher than WM in both groups (p < 0.001). The difference between ADC value of WM at the centrum semiovale (p < 0.05) and occipital horns (p < 0.001) in patients and controls was statistically significant. There was no statistically significant difference between EDSS scores, ADC value at centrum semiovale and WM around occipital horn and active plaques in subgroups (p > 0.05). Conclusion: Apparently normal tissue in MS patients may show early abnormalities when investigated carefully enough, and there is an even though moderate correlation between EDSS and ADC values and early alterations of ADC value are starting in the occipital white matter along the ventricles. This has to be verified in larger series.Item Efficacy of ultrasonography in lymphatic malformations: Diagnosis, treatment and follow-up: A case report(Soc Romana Ultrasonografe Medicina Biologie-Srumb, 2013-09) Aslan, Ahmet; Büyükkaya, Ramazan; Tan, Sinan; Hakyemez, Bahattin; Erdoǧan, Cüneyt; Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.; 6602527239; 8293835700Lymphatic malformation (LM) is a localized and rare benign anomaly of the lymphatic system. Surgery is the primary form of treatment, but total resection is difficult and generally not possible. The least invasive and most effective form of treatment is injection sclerotherapy with sclerosing agents. Here, we report a case of LM in a baby, detected at prenatal ultrasound. The aim of this report is to assess the importance of ultrasonography in the prenatal diagnosis, therapy and follow-up of LM's.Item Foramen of Monro meningioma with atypical appearance: CT and conventional MR findings(Wiley-Blackwell Publishing, Inc, 2007-10-08) Hakyemez, Bahattin; Erdoǧan, Cüneyt; Oruç, Esra; Aker, Sibel; Aksoy, Kaya; Parlak, Müfit; Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.; Uludağ Üniversitesi/Tıp Fakültesi/Patoloji Anabilim Dalı.; Uludağ Üniversitesi/Tıp Fakültesi/Nöroşirürji Anabilim Dalı.; 0000-0002-3425-0740; AAI-2318-2021; 6602527239; 8293835700; 22136162300; 12795285000; 6701720577; 7003589220Intraventricular meningiomas have often been reported; however, literature reveals very few cases localized within foramen of Monro. Herein we report a 57-year-old woman admitted with obstructive hydrocephalus-related symptoms. Strikingly, the lesion was completely calcified in CT and had no marked solid component on MRI. The lesion was completely removed by surgical resection with a transfrontal intraventricular approach. The resected mass was histopathologically diagnosed as meningioma. The patient's symptoms resolved immediately after the operation.Item Impaired aortic distensibility in hypothyroid patients with negative coronary angiograms: Simultaneous evaluation with 128-slice multiple row detector computed tomography(Sage Publications, 2013-03-01) Duşak, Abdürrahim; Gökalp, Gökhan; Erdoǧan, Cüneyt; Parlak, Müfit; Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.; AAG-8521-2021; A-7826-2019; AAI-2336-2021; 6507393726; 8312505100; 8293835700; 7003589220Objective To determine the relationship between arterial distensibility and hypothyroidism by simultaneous assessment of coronary angiography and aortic distensibility, measured using 128-slice retrospective electrocardiogram-gated multiple row detector computed tomography (MDCT). Methods Untreated hypothyroid patients and age-matched euthyroid patients, who underwent 128-slice retrospective electrocardiogram-gated MDCT to evaluate the coronary arteries, were assessed. Intraluminal aortic areas in systolic and diastolic phases of the cardiac cycle were measured with multiphase reformation at predefined locations including the ascending aorta, proximal descending aorta and distal descending aorta in the widest axial plane. Results The study included 21 hypothyroid and 21 euthyroid patients. Patients with hypothyroidism exhibited decreased aortic distensibility between each location in the thoracic aorta (ascending aorta, proximal descending aorta and distal descending aorta) compared with euthryoid patients. Conclusions Hypothyroidism was associated with preclinical vascular alteration, characterized by impaired aortic distensibility at each location of the thoracic aorta, which has been shown to be related to increased cardiovascular risk. Monitoring of aortic distensibility is relevant for evaluating coronary artery disease progression and treatment choices.Item Opacification of nondilated bile ducts through the gallbladder as an aid to percutaneous transhepatic biliary drainage(Elsevier, 2018-04) Soylu, Esra; Hacıkurt, Kadir; Öztürk, Kerem; Nas, Ömer Fatih; Erdoǧan, Cüneyt; Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.; 0000-0001-9664-2347; E-1228-2018; AAG-8561-2021; 57193199579; 51864050100; 8293835700Purpose: The purpose of this study was to retrospectively assess the potential of percutaneous transhepatic biliary drainage (PTBD) in patients with nondilated bile ducts (NDBD) using a transgallbladder opacification of the bile ducts. Patients and methods: Eight patients with NDBD (7 men, 1 women; median age, 65 years; Q1-Q3, 35-69 years; range, 22-77 years) who underwent PTBD after opacification of the bile ducts through the gallbladder were evaluated. Opacification of NDBD was performed using a retrograde injection of contrast material through the gallbladder. The opacified peripheral NDBD was punctured percutaneously and a drainage catheter was introduced under fluoroscopy guidance. The success and safety of the procedure were assessed. Results: PTBD could be achieved in 6/8 patients (75%) and no significant complications were observed. The biliary tree opacification was attempted but could not be achieved due to biliary sludge that obstructed the cystic duct in 2/8 patients (25%). Two minor complications in two different patients were observed consisting of transient hemobilia and chills. Conclusion: Opacification of the bile ducts using a transgallbladder approach appears to be a safe and successful procedure for PTBD in patients with NDBD. (C) 2017 Editions francaises de radiologie. Published by Elsevier Masson SAS. All rights reserved.Item Retrievable stent technique and coil embolization of high-flow iatrogenic cervical vertebral arteriovenous fistula: Technical note(Sage Publications, 2013-11) Büyükkaya, Ramazan; Hakyemez, Bahattin; Erdoǧan, Cüneyt; Uludağ Üniversitesi/Tıp Fakültesi.; 0000-0002-3425-0740; AAI-2318-2021; 6602527239; 8293835700Cervical vertebral arteriovenous fistulas (VAFs) are rare clinical entities between the vertebral artery and veins of the neighborhood. We report the first approach in the literature experience in the treatment of high-flow VAF caused by percutaneous catheterization of the internal jugular vein, which was successfully occluded with coils and Solitaire AB neurovascular remodeling device system that can be fully retrieved even when fully deployed for procedural control. Complete angiographic and clinical cure was achieved, and no complications related to the new embolization procedure occurred.Item Role of diffusion and perfusion-weighted MR imaging in differentiating meningioma from solitary dural metastasis(Edizioni Centauro, 2005-04) Yıldırım, Nalan; Hakyemez, Bahattin; Erdoǧan, Cüneyt; Parlak, Müfit; Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.; 0000-0002-3425-0740; AAI-2318-2021; 36867883100; 6602527239; 8293835700; 7003589220In some instances conventional imaging techniques fall to differentiate meningiomas from isolated dural metastasis. This study aimed to evaluate the role of diffusion and perfusion-weighted MRI in differentiating meningiomas and dural metastasis. In this study, 14 metastasis and 26 meningiomas were involved. The imaging characteristics were analyzed using conventional MRI. Diffusion-weighted MRI was performed and ADC values were calculated from the solid components and the peritumoral edema. Perfusion-weighted MRI was performed and relative cerebral blood volume (rCBV) was calculated. Student's t test was used for the statistical analysis. Dural metastasis and meningiomas could not be differentiated by qualitative assessment of conventional and diffusion-weighted MRI. The mean intratumoral and peritumoral ADC values were not statistically significant (p > 0.05). The rCBV ratios for dural metastasis and meningiomas were 4.13 +/- 2.32 and 7.32 +/- 4.10 respectively and the difference between two was statistically significant (p = 0.003). Peritumoral rCBV ratios for dural metastasis and meningiomas were not statistically significant (p > 0.05). Conventional MRI findings of dural metastasis and meningiomas may overlap in some lesions. In differentiation of these lesions diffusion-weighted MRI yields no further information additional to conventional sequences. Perfusion-weighted MRI can be useful to distinguish these lesions by demonstrating high intratumoral rCBV ratios for meningiomas and low rCBV ratios for metastasis.Item Ultrasound biomicroscopic evaluation of anterior segment cysts as a risk factor for ocular hypertension and closure angle glaucoma(IJO Press, 2013-07) Duşak, Abdürrahim; Baykara, Mehmet; Özkaya, Güven; Erdoǧan, Cüneyt; Özçetin, Hikmet; Tuncel, Ercan; Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Bölümü.; Uludağ Üniversitesi/Tıp Fakültesi/Oftalmoloji Bölümü.; Uludağ Üniversitesi/Tıp Fakültesi/İstatistik Bölümü.; 0000-0003-0297-846X; A-7826-2019; ABI-7051-2020; A-4421-2016; 6507393726; 23093006700; 16316866500; 8293835700; 6603402155; 7006929833AIM: To investigate the relationship between the ultrasound biomicroscopic (UBM) features of anterior - segment cysts (ASCs) and increased intraocular pressure (IOP) as a risk factor for closed-angle glaucoma (CAG). METHODS: Totally 24 eyes with recently diagnosed ASCs were divided into two groups. First group with ASC and ocular normotension(n=13), second group with ASC and ocular hypertension (n=11). An ophthalmologic examination, including tonometry, slit -lamp biomicroscopy (SLBM), gonioscopy, fundoscopy, pentacam, and UBM, was performed. The features of the ASCs were compared with the IOP. RESULTS: ASCs were accurately diagnosed and delineated in 24 eyes using UBM. IOP was elevated in those ASCs with a secondary aetiology (P=0.027), iridociliary location(P=0.006), deformed shape (P=0.013), increased size (P =0.001) and elongated pupillary aperture (P=0.009). However, the count (P=0.343) of ASCs, anterior chamber depth (ACD; P=0.22) and axial lenght (AL; P =0.31) were not associated with ocular hypertension. Correlations were found between the IOP and ASC size (r =-0.712; P=0.003), anterior chamber angle (ACA; r =-0.985; P<0.001), angle opening area (AOA; r=0.885; P<0.001), angulation of iris (r=-0.776, P<0.001), and affected iris quadrant (r=-0.655, P=0.002). CONCLUSION: Ocular hypertension in some eyes with ASC might be associated with various mechanisms, including secondary aetiology, iridociliary location, deformed shape, increased size and elongated pupill, which can be determined by UBM.