Browsing by Author "Kandemirli, Sedat Giray"
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Publication Cerebral hydatid cyst with intraventricular extension: A case report(Oxford Univ Press, 2019-12-01) Cingöz, Mehmet; Olmaz, Burak; Akdoğan, Emin; Cengiz, Mustafa; Kandemirli, Sedat Giray; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.; A-1409-2017Intracranial hydatid cyst is a rare entity, comprising about 2-3% of all hydatid cysts. Similarly, intracranial hydatid cysts account for 1-2% of all intracranial lesions. Clinical symptoms are generally nonspecific and patients usually present with symptoms of increased intracranial pressure. Cerebral hydatid cysts can be either primary or secondary to systemic hydatid disease. Primary cerebral hydatid cysts are usually solitary, unilocular with an intraparenchymal location. Intraventricular extension of hydatid cysts account for a limited percentage of all cerebral hydatid cysts with limited number of cases reported. Herein, we present the imaging and surgical findings of a primary cerebral hydatid cyst that is located in frontal lobe parenchyma with partial extension into the ventricular system.Item Congenital arteriovenous fistula between descending aorta and the left innominate vein(Springer, 2019-07-01) Kandemirli, Sedat Giray; Kızılkaya, Mete Han; Erdemli, Başak Gürsel; Akça, Tuğberk; Bostan, Özlem Mehtap; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Çocuk Kardiyoloji Anabilim Dalı.; 0000-0002-2747-974X; 0000-0001-6332-5302; 0000-0001-7707-2174; AEX-4557-2022; HPC-7315-2023; AAH-6568-2021; AAG-8558-2021; A-1409-2017; 22834938400; 57201153209; 57209833506; 8676936500; 57209823599Thoracic aortocaval fistulae are rare entities where a direct shunt between thoracic arteries and systemic veins is seen. They can be traumatic or congenital in origin. Congenital thoracic aortocaval fistulae usually involve descending aorta and azygos, hemiazygos systems. Presenting symptoms range from continuous murmur to signs of congestive heart failure. In this case report, imaging findings of a 3-year-old girl referred for continuous murmur over the left sternal border are presented. Computed tomography angiography revealed multiple tortuous vessels along the descending aorta with a course toward the left brachiocephalic vein, and was suspicious for an aorta-venous fistula. Subsequent digital subtraction angiography for treatment planning showed a fistula originating at the level of the left 6th intercostal artery, with direct drainage into the left brachiocephalic vein without involvement of the azygos/hemiazygos system.Item Cross-sectional imaging and laparoscopic findings of diaphragmatic mesothelial cysts(W.B. Saunders, 2019-10-30) Sansar, Serpil; Özçakır, Esra; Kaya, Mete; Kandemirli, Sedat Giray; Parlak, Ayşe; Bilgin, Cem; Gürpınar, Arif Nuri; Yazıcı, Zeynep; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Çocuk Cerrahisi Anabilim Dalı.; 0000-0001-7686-2561; AAH-6766-2021; HHS-7433-2022; AAI-2303-2021; A-1409-2017; ITP-4695-2023; 22834938400; 57202853581; 57200617643; 7004350616; 6701668723AIM: To present cross-sectional imaging, surgical findings, and follow-up results of diaphragmatic mesothelial cysts. MATERIALS AND METHODS: Radiological findings for location, size, shape, and internal structure of cysts were reviewed retrospectively. For patients that underwent surgery, surgical reports and laparoscopy images were reviewed. In conservatively managed patients, changes in size and imaging findings of the cyst were assessed during follow-up visits. RESULTS: A total of 13 paediatric cases with an imaging and/or pathological diagnosis of diaphragmatic mesothelial cyst were identified. In all cases, the cystic lesions were located between the diaphragm and the posterolateral aspect of the right lobe of the liver. Eleven lesions (84.6%) had a bi-lobulate shape. Eight of these cases underwent laparoscopic cyst aspiration/unroofing. The postoperative course was uneventful and there were no cases of recurrence. The remaining five cases were managed conservatively with follow-up available in four cases. In three cases (75%), there was reduction in the size of the cysts with a mean volume reduction of 55%. CONCLUSION: Diaphragmatic mesothelial cysts are congenital cystic lesions that are usually detected incidentally. A common pitfall is incorrect interpretation of the lesion as a hepatic cyst. Conservative management with imaging follow-up can be adopted in asymptomatic cases with typical imaging findings.Publication Demonstration of corkscrew collaterals in buerger's disease by superb microvascular imaging(Elsevier, 2019-09-01) Kandemirli, Sedat Giray; Gürsel, Başak Erdemli; ERDEMLİ GÜRSEL, BAŞAK; Yolgösteren, Atıf; YOLGÖSTEREN, ATIF; Nas, Ömer Fatih; NAS, ÖMER FATİH; Bursa Uludağ Üniversitesi/Tıp Fakültesi; 0000-0002-4467-3915; AAH-6568-2021; AAG-8561-2021; AAG-2372-2021Publication Diagnostic utility of superb microvascular imaging in depiction of corkscrew collaterals in Buerger's disease(Wiley, 2020-05-27) Nas, Ömer Fatih; Kandemirli, Sedat Giray; Erdemli Gürsel, Başak; Bilgin, Cem; Korkmaz, Barış; Yolgösteren, Atıf; İnecikli, Mehmet Fatih; NAS, ÖMER FATİH; Kandemirli, Sedat Giray; ERDEMLİ GÜRSEL, BAŞAK; BİLGİN, CEM; KORKMAZ, BARIŞ; YOLGÖSTEREN, ATIF; İNECİKLİ, MEHMET FATİH; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Kalp ve Damar Cerrahisi Anabilim Dalı.; 0000-0002-4467-3915; AAG-2372-2021; HHS-7433-2022; AAK-5124-2020; AAG-8561-2021; AAH-6568-2021; A-1409-2017; FHT-9776-2022Purpose To evaluate the corkscrew collaterals in Buerger's disease by superb microvascular imaging (SMI) and power Doppler ultrasonography (PDU). Methods We evaluated with SMI and PDU 14 patients with Buerger's disease in whom corkscrew collaterals had been identified on digital subtraction angiography (DSA). Corkscrew collaterals were classified on DSA and PDU based on their size and morphology. Results A total of 17 vascular regions of collateral vessel formation were assessed. Based on DSA classification, there were three cases of type I collaterals (arterial diameter of >2 mm with large helical pattern), seven cases of type III collaterals (arterial diameter of 1-1.5 mm with small helical pattern), and seven cases of type IV collaterals (arterial diameter of <1 mm with tiny helical pattern). On PDU, all type I collaterals on DSA appeared as "large snake" images, all type III collaterals on DSA appeared as "small snake" images, and all type IV collaterals on DSA appeared as dots. SMI imaging, both in color and monochrome mode, provided superior demonstration of the continuity of the vessel of large or small "snake" images. In cases appearing as dot pattern on PDU, color SMI was able to show continuity of the flow signal as a helical pattern. Discussion SMI is a promising new Doppler imaging technique that is superior to conventional power Doppler imaging in depiction and identification of corkscrew collaterals in Buerger's disease.Item Intrathoracic bifurcation of the left common carotid artery associated with rib fusion and Klippel-Feil syndrome(Springer France, 2019-09-09) Kandemirli, Sedat Giray; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.; 22834938400Common carotid artery usually bifurcates at the superior border of thyroid cartilage, corresponding to the C3-4 junction, however bifurcation level may vary. Common carotid bifurcation may have rare variations like separate origins of left internal and external carotid arteries from aortic arch, or bifurcation of common carotid artery within thoracic cavity. Intrathoracic carotid bifurcation is a rare variation with limited number of cases reported. The occurrence of a low carotid bifurcation seems to be embryologically related to the persistence of the ductus caroticus. Additionally, intrathoracic carotid bifurcation can be accompanied by findings of Klippel-Feil syndrome. Herein, we present imaging findings of an incidentally detected intrathoracic left common carotid artery bifurcation in a pediatric patient accompanied by fusion of the cervical vertebrae and ribs.Item Memenin fibroepitelyal lezyonlarının US bulgularının eksizyonel biyopsi sonuçlarıyla karşılaştırılması(Bursa Uludağ Üniversitesi, 2021-04-16) Kandemirli, Sedat Giray; Kaya, Mehmet Onur; Gürsel, Başak Erdemli; Tolunay, Şahsine; Topal, Naile Bolca; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Patoloji Anabilim Dalı.; 0000-0002-0047-1780; 0000-0002-9038-0515; 0000-0002-4821-242XÇalışmamızın amacı, ultrasonografi (US) eşliğinde kesici iğne biyopsi (KİB) sonucu fibroepitelyal lezyon (FEL) olan lezyonların klinik ve US bulgularını, patolojik ayrımda kullanılan Ki-67 indeksini, eksizyonel biyopsi sonuçlarıyla karşılaştırarak ayırımda yararlı olabilecek bulguların araştırılmasıdır. 2009-2013 yılları arasında US eşliğinde KİB yapılmış 50 olguda, sonucu FEL olan 53 lezyon değerlendirilmiştir. Elliüç lezyonun 43’ü histopatolojik olarak FA, 10 tanesi de filloides tümör (FT) tanısı almıştır. Hastaların klinik bulguları, lezyonların BIRADS sınıflamasına göre yapılan ultrasonografik özellikleri ve KİB preparatlarının Ki-67 proliferatif indeks değerleri belirlenmiştir. Ayrıca meme radyolojisi konusunda 20 yıllık deneyim olan bir radyolog, eksizyon sonuçlarını bilmeden, lezyonların sonografik görüntülerini yorumlamıştır. Buna göre hiçbir klinik ve ultrasonografik parametrenin FA ve FT ayrımında özgün olmadığı sonucuna ulaşılmıştır. KİB preparatlarından yapılan Ki-67 proliferatif indeks değerleri de ayırıcı tanıya katkı sağlamamıştır. Ancak meme radyolojisi konusunda uzman radyoloğun öngörüsü ile cerrahi sonuçlar arasında istatistiksel olarak anlamlı uyumluluk bulunmuştur. Bu nedenle KİB sonucu FEL gelen ancak uzman radyoloğun benign olarak yorumladığı seçilmiş olgularda yakın takip alternatif bir seçenek olarak değerlendirilebilir.Publication Post-traumatic occipital intradiploic encephalocele(Elsevier Science, 2019-05-22) Kandemirli, Sedat Giray; Candan, Selman; Bilgin, Cem; Kandemirli, Sedat Giray; CANDAN, SELMAN; BİLGİN, CEM; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.; 0000-0002-3976-4062; HHS-7433-2022; GVS-7682-2022; A-1409-2017BACKGROUND: Brain parenchyma herniation through a disrupted inner table into an enlarged diploic cavity with an intact outer table is described as intradiploic encephalocele. Intradiploic encephaloceles share common morphologic characteristics with expanding skull fractures and intradiploic arachnoid cysts. Herein, we describe a case of traumatic occipital intradiploic encephalocele.CASE DESCRIPTION: Cranial computed tomography of an 11-year-old boy revealed erosion of the inner table of the left side of occipital bone and expansion of the cranial diploe by a soft-tissue density with a gyral pattern. His medical history was positive for head trauma at the age of 3 years to the same region. Magnetic resonance imaging showed herniation of left occipital parenchyma with cystic encephalomalacic changes into the diploe.CONCLUSIONS: Intradiploic encephaloceles have different features compared with the classic encephalocele and can be considered as a variant of expanding skull fracture and intradiploic arachnoid cyst.Item Predictors of antegrade ureteral stenting failure: A single-center experience in patients with malignant and benign ureteral obstruction(Springer, 2020-11-05) Kandemirli, Sedat Giray; Nas, Ömer F.; Öztepe, Muhammed F.; Bilgin, Cem; Özkaya, Güven; İnecikli, Mehmet F.; Kaygısız, Onur; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Aanabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Üroloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Biyoistatistik Anabilim Dalı.; 0000-0003-0297-846X; 0000-0002-9796-8223; AAG-8561-2021; DLB-1623-2022; HHS-7433-2022; GBB-7153-2022; 51864050100; 57219990637; 57200617643; 16316866500; 36660852200; 16637252400Objective To determine the potential predictors of antegrade ureteral stenting (AUS) failure in patients with malignant and benign ureteral obstruction. Method We retrospectively evaluated 116 AUS procedures performed in 80 patients for ureteral obstruction due to malignant and benign causes. Variables such as etiology for obstruction, ureter shape, previous treatment regimen, history of ileal loop diversion, and presence of percutaneous nephrostomy were recorded. Univariate and multivariate logistic regression methods were used between these variables and stent failure. Results Antegrade ureteral stenting was performed as single stage in 24 procedures (n: 24/116, 21%) and performed as a two-step approach after percutaneous nephrostomy in 92 procedures (n: 92/116, 79%). Ureteral stent was successfully deployed in 112 AUS procedures (n: 112/116, 96.5%). In 35 of these successful procedures, the patients were referred to our department due to prior failed retrograde ureteral stenting (RUS). Subsequent stent failure occurred in 40 procedures after a median interval of 39 days. Pre-stenting percutaneous nephrostomy (PN) was a statistically significant risk factor for stent failure (p: 0.041), and age showed an inverse relationship with stent failure (p: 0.008). Complications in early (within the first 30 days after procedure) and late stage occurred in a total of 17 procedures. Early complications included urinary tract infection (n: 11), stent migration (n: 3), and malposition (n: 1). Late complications (after 30 days) were urinary tract infection (n: 1) and stent migration (n: 1). Conclusion This study suggests that AUS can be performed effectively in both benign and malignant ureteral obstructions including cases with prior failed RUS. Two-step AUS after percutaneous nephrostomy was found to be a significant risk factor for subsequent stent failure in our study cohort.Item Prognostic value of pretreatment tumor-to-blood Standardized Uptake Ratio (SUR) in rectal cancer(Springer, 2020-06) Kandemirli, Sedat Giray; Belge, Gökçe; Bilgin, Cem; Özkaya, Güven; Alper, Eray; Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Bölümü; Uludağ Üniversitesi/Tıp Fakültesi/Nükleer Tıp Bölümü; Uludağ Üniversitesi/Tıp Fakültesi/Biyoistatistik Bölümü; 0000-0003-0297-846X; CFT-6124-2022; A-4421-2016; EJU-2547-2022; 57216409186; 57200617643; 16316866500; 7006827670Objectives: The prognostic value of SUV on pretreatment F-18 FDG PET/CT imaging in patients with rectal cancer is a matter of debate. SUR is of prognostic value for survival in different cancers. In this study, we aimed to examine the potential prognostic value of SUR and other parameters in pretreatment F-18 FDG PET/CT for non-metastatic rectal cancer. Methods: One hundred four non-metastatic rectal cancer patients who underwent pretreatment PET/CT between March 2012 and January 2018 were included in the study. Firstly, SUVmax, SUVmean, MTV, and TLG were calculated semi-automatically at the workstation. SUR was calculated as the ratio of tumor SUVmax to thoracic aorta blood SUVmean. Univariate Cox regression and Kaplan–Meier analysis were used to evaluate overall survival (OS), progression free survival (PFS), and local recurrence (LR). Then, multivariate Cox regression analysis, which included the parameters that were significant in the univariate analysis, was performed. Results: Multivariate Cox regression analysis revealed that SUR was a prognostic factor for PFS. Age and T stage were prognostic factors for both OS and PFS. MTV was found to be independent risk factors for OS. Conclusions: In our study, SUR was the only F-18 FDG PET/CT parameter found to be significant for PFS. The development of new parameters can increase the prognostic value of F-18 FDG PET/CT.Publication Superb microvascular imaging in assessment of synovitis and tenosynovitis in juvenile idiopathic arthritis(Lippincott Williams & Wilkins, 2021-03-01) Kandemirli, Sedat Giray; Çicek, Fatih; Erdemli Gürsel, Başak; Bilgin, Cem; Kiliç, Sara Sebnem; Yazıcı, Zeynep; Çicek, Fatih; ÇİÇEK, FATİH; Erdemli Gürsel, Başak; ERDEMLİ GÜRSEL, BAŞAK; Bilgin, Cem; BİLGİN, CEM; Kiliç, Sara Sebnem; KILIÇ GÜLTEKİN, SARA ŞEBNEM; Yazıcı, Zeynep; YAZICI, ZEYNEP; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.; 0000-0001-7348-7081; 0000-0001-8571-2581; AAH-1658-2021; HHS-7433-2022; JKI-5906-2023; AAH-6568-2021The aim of this study is to evaluate the diagnostic utility of superb microvascular imaging (SMI) in assessment of synovitis/tenosynovitis in juvenile idiopathic arthritis in comparison to power Doppler ultrasound. Thirty juvenile idiopathic arthritis cases with active clinical findings and ultrasound features of effusion and/or tenosynovitis were further imaged with power Doppler and SMI. For classification of synovial inflammation, a semiquantitative scale (4 points) adopted by Outcome Measures in Rheumatology was used.A total of 35 knee, 2 hip, 2 ankle, 2 wrist, 2 elbow joints, and 6 flexor hallucis longus/tibialis posterior tenosynovitis were assessed. In knee joint, power Doppler and SMI scales were the same for 23 (65.7%) joints, SMI upgraded scale from 0 to 2 in single joint (2.9%); 1 to 2 (14.3%) in 5 joints; and 2 to 3 (17.1%) in 6 joints. For other joints, power Doppler and SMI scales were the same for 5 (62.5%) joints. Superb microvascular imaging upgraded scale from 1 to 2 (25%) in 2 joints and 1 to 3 (12.5%) in a single joint. For flexor hallucis longus/tibialis posterior tenosynovitis, power Doppler and SMI scales were the same for two cases (33.3%). Superb microvascular imaging upgraded scale from 0 to 2 in two cases (33.3%); and 2 to 3 (33.3%) in 2 cases. There was no case of SMI scale downgraded compared with power Doppler scale.Superb microvascular imaging is a feasible technique in the assessment of synovial inflammation and tenosynovitis in juvenile idiopathic arthritis. Superb microvascular imaging has higher sensitivity compared with power Doppler ultrasound in depiction of increased vascularity.Item Temporal evolution of imaging findings in ossified cephalohematoma(Lippincott Williams & Wilkins, 2019-12-23) Cingöz, Mehmet; Olmaz, Burak; Kandemirli, Sedat Giray; Bilgin, Cem; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.; FEP-7016-2022; CFR-0325-2022; 22834938400; 57200617643Background: Cephalohematoma is collection of blood between skull and periosteum that is confined by cranial sutures. Cephalohematomas usually resorb spontaneously within the first month of life; however, if it fails to resolve, ossified cephalohematoma may form. Methods: Clinical archiving system and picture archiving and communication system were retrospectively reviewed for cases of birth-related cephalohematoma. Cases of ossified cephalohematomas identified on imaging were retrieved from this subset of patients. Cross-sectional imaging findings in patients with ossified cephalohematomas were evaluated for location, size of the hematoma, and contours of the inner lamella. Results: Out of 115 cases of cephalohematoma, 7 cases had imaging findings consistent with ossified cephalohematoma. All ossified cephalohematomas were located parietally, with size ranging between 18 and 55 mm and the thickness of the outer rim of calcification ranging between 1.5 and 4.8 mm. The contour of inner lamella in relation to the surrounding normal cranial vault was normal in 5 cases, and inner lamella was depressed in 2 cases. Three patients had follow-up imaging available for demonstration of changes in ossified cephalohematoma. The first case was an 11 day-old boy with a cephalohematoma with no signs of calcification at the time of initial imaging. Follow-up at 2 months of age showed partial regression of hematoma cavity with marked calcification at the hematoma walls. The second case was a 3 month-old boy with ossified cephalohematoma at initial imaging. Follow-up imaging at 7 months of age showed almost total regression of hematoma cavity, and approximation of inner and outer lamella with increased thickness of the cranial vault. The third case was a 1 month-old boy with ossified cephalohematoma at initial imaging that totally resolved without residual increased bone thickness at 21-month follow-up. Conclusion: These 3 cases demonstrate the variability in temporal changes that may occur in ossified cephalohematomas.