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Öğe An analysis of lesions associated with developmental venous anomalies(Royal Coll Surgeons England, 2021) Taydaş, Onur; Oğul, Hayri; Kantarcı, MecitObjective The aim of this study was to describe different lesions and features associated with developmental venous anomalies (DVAs). Methods The records and magnetic resonance imaging (MRI) images of 1,722 patients who underwent cranial MRI between 2010 and 2017 were retrospectively reviewed. It was found that 124 (7.2%) patients had DVAs, and 48 of these patients (38.7%) had additional anomalies accompanying DVAs. Of the patients with DVAs, 25 were female and 23 were male, with a mean age of 39.3 years (range, 3-77 years). MRI was performed in all the patients. Results In addition to DVAs, cavernomas were present in 30 patients (62.5%), haematomas in 7 (14.5%), gliosis in 6 (12.5%), demyelinating plaques in 4 (8.3%) and a glioblastoma in 1 (2.2%). The mean diameter of the DVAs was 1.1mm and the mean diameter of the lesions was 17.4mm. The susceptibility weighted imaging (SWI) sequence was also applied to 12 patients with cavernomas. The relevant sequence in all of these patients contributed to the diagnosis. Conclusion Our study shows that DVAs can accompany a wide spectrum of lesions, especially cavernomas. Although their pathophysiology has not yet been clearly established, these lesions may have a common aetiology.Öğe Bilateral acute thalamic infarctions following basilar artery dissection: an uncommon cause of thalamic hyperintensity on magnetic resonance imaging(Ma Healthcare Ltd, 2022) Oğul, Hayri; Kaya, Serhat; Kantarcı, Mecit[Bastract Not Available]Öğe Bilateral adrenal haemorrhage after blunt abdominal trauma(Ma Healthcare Ltd, 2023) Güvendi, Bülent; Köksal, Ali; Gözgeç, Elif; Oğul, Hayri; Kantarcı, Mecit[Bastract Not Available]Öğe Bilateral Conjugating Carotid Body Tumor and Associated Jugular Vein Aneurysm(Sage Publications Inc, 2023) Taydaş, Onur; Güçlü, Derya; Ünlü, Elif Nisa; Oğul, Hayri; Kantarcı, MecitCarotid body tumors (CBTs) originate from the paraganglionic tissue in the bifurcation of the common carotid artery. Magnetic resonance (MR) imaging is a commonly used diagnostic method in the preoperative diagnosis of these tumors. In this study, we demonstrated an isthmus between the right and left carotid body tumors in a patient with bilateral CBT. The left CBT also was associated with a saccular aneurysm of left external jugular vein.Öğe Bilateral dacryoadenitis associated with IgG4-related disease presenting as orbital pseudo-inflammatory tumor(Elsevier France-Editions Scientifiques Medicales Elsevier, 2022) Oğul, Hayri; Ünlü, Elif Nisa[Bastract Not Available]Öğe Bilateral Masticator Space Metastasis of Breast Cancer Mimicking Abscess(Sage Publications Inc, 2023) Gözgeç, Elif; Oğul, Hayri; Eren, SuatMetastasis to the masticator space and mandible is very rare. The most common origin in women is breast cancer. Cystic metastases may radiologically mimic abscess. Definitive diagnosis can be made histopathologically. The prognosis of these patients is very poor and early diagnosis is important. Therefore, metastasis should be considered in the differential diagnosis of oral lesions.Öğe Bilateral Simultaneous Primary Patellar Giant Cell Tumors(Springer Heidelberg, 2023) Aydın, Fahri; Oğul, Hayri; Tuncer, Kutsi; Kantarcı, MecitGiant cell tumor is a relatively frequent benign bone tumor; that is usually exhibited in the epiphyseo-metaphyseal region of long bones. Computed tomography and magnetic resonance imaging may show cortical thinning and endosteal scalloping of the bone cortex in giant cell tumors. In radiologic imaging, the giant cell tumor of the bone is a heterogeneous mass because it contains many components, such as solitary mass, cystic areas, and bleeding. The occurrence of giant cell bone tumor in the patella is a rare condition and in this letter, we have reported the unusual coexistence of giant cell tumor on the bilateral patella at the same time. To the best of our knowledge, there is no reported case in the literature of bilateral patellar giant cell tumors.Öğe Bilateral ureterohydronephrosis associated with cystocele(Ma Healthcare Ltd, 2022) Köksal, Ali; Oğul, Hayri[Bastract Not Available]Öğe A case of double sternal foramina presenting with chronic chest pain(Elsevier France-Editions Scientifiques Medicales Elsevier, 2022) Tuncer, Kutsi; Aydın, Yener; Oğul, Hayri[Bastract Not Available]Öğe A Case of Sphenoid Mucocele Causing Hypopituitarism(Sage Publications Inc, 2022) Gözgeç, Elif; Oğul, HayriMucocele is rarely seen in the sphenoid sinus. It may cause compression of neighboring structures due to significant destruction of the bony structure and its expansile nature. Although headache is the main symptom, it may present with different symptoms. Imaging methods play an important role in the diagnosis and differential diagnosis.Öğe A case presentation of unilateral cavernous sinus inflammation due to monostotic fibrous dysplasia(Springer, 2022) Gözgeç, Elif; Oğul, HayriBackground Craniofacial monostotic fibrous dysplasia is a rare and usually incidental bone pathology. CT comes to the fore in the diagnosis of monostotic fibrous dysplasia and MRI is used to show its relationship to the neighboring structures. Cavernous sinus inflammation may occur due to infectious and inflammatory causes. Inflammation of unknown cause is called Tolosa-Hunt syndrome. Case presentation In this case report, we presented cavernous sinus inflammation accompanying fibrous dysplasia in a 35-year-old female patient, which was seen for the first time in the literature. Conclusions The contrast-enhanced MR images are very important for the diagnosis and follow-up of the patient, in the rare presence of association we have shown in this case.Öğe Case Report of a Patient With Posttraumatic Perilymphatic Fistula(Sage Publications Inc, 2022) Köksal, Ali; Ayyıldız, Veysel; Oğul, Hayri; Kantarcı, MecitOn a perilymphatic fistula, there is an extravasation of the perilymph fluid into the middle ear cavity. Cross-sectional imaging techniques have very important role in evaluation of inner and middle ear structures and temporal bone. While thin section CT scans can show successfully pneumolabyrinth and temporal bone fracture, high-resolution 3D volumetric MRI sequences can help to demonstrate posttraumatic ear effusion and cerebrospinal fluid fistula into inner ear or middle ear.Öğe Cemento-Ossifying Fibroma With Cerebral Involvement(Sage Publications Inc, 2023) Güçlü, Derya; Ayyıldız, Veysel; Ünlü, Elif Nisa; Oğul, HayriCemento-ossifying fibroma (COF) is a rare fibro-osseous tumor. The lesion is most commonly seen in people in the third and fourth decade. There are three variants of ossifying fibroma; juvenile trabecular ossifying fibroma, juvenile psammomatoid ossifying fibroma, and COF. COF is highly cellular and contains a fibrous tissue that has different amounts of calcified tissue. Although histologically benign, it has a significant growth potential.Öğe Cerebellar cavernous angioma associated with developmental venous anomaly presenting as a cerebellopontine angle neoplasm in CT scan(Sage Publications Inc, 2023) Oğul, Hayri; Gözgeç, Elif; Demirdöğen, Filiz; Kantarcı, MecitAssociation of developmental venous anomaly (DVA) and cavernous malformation (CM) of the posterior fossa is rare. If bleeding occurs, it must be assigned to the CM. Developmental venous anomalies, considered as normal vascular variation, are rarely symptomatic. Indeed, the CMs are true malformations and have a high bleeding potential.Öğe Cerebellar Developmental Venous Anomaly Causing Tinnitus and Hemifacial Spasm: A Case Report(Sage Publications Inc, 2022) Oğul, Hayri; Ünlü, Elif Nisa; Güçlü, Derya; Köksal, Ali[Bastract Not Available]Öğe Clarify whether the patient has a pneumothorax or pseudopneumothorax before intervention(Ma Healthcare Ltd, 2022) Aydın, Yener; Oğul, Hayri; Ulas, Ali B.; Eroğlu, Atilla[Bastract Not Available]Öğe Contribution of advanced MRI to the diagnosis of giant tumefactive perivascular spaces(Sage Publications Ltd, 2022) Ayyıldız, Veysel; Köksal, Ali; Taydaş, Onur; Oğul, HayriBackground Giant tumefactive perivascular spaces (PVSs) are uncommon benign cystic lesions. They can imitate cystic neoplasms. Purpose To evaluate the contribution of advanced neuro magnetic resonance imaging (MRI) techniques in the diagnosis of giant tumefactive PVSs and to further characterize these unusual cerebral lesions. Material and Methods The MRI scans of patients with tumefactive PVS diagnosed between 2010 and 2019 were retrospectively reviewed. All imaging studies included three plane conventional cerebral MRI sequences as well as precontrast 3D T1 MPRAGE, post-gadolinium 3D T1 acquisitions, sagittal plane 3D T2 SPACE, diffusion-weighted imaging, and time-of-flight (TOF) angiography. Some patients received perfusion MR, MR spectroscopy, diffusion tensor imaging (DTI), and contrast-enhanced TOF MR angiography. Results A perforating vessel was demonstrated in 16 patients (66.7%) by TOF imaging. In four patients, there were intracystic vascular collaterals on contrast-enhanced TOF MR angiography. Septal blooming was observed in four patients in susceptibility-weighted imaging. On perfusion MR, central hyperperfusion was observed in four patients, and peripheral hyperperfusion was observed in one patient. On MR spectroscopy, choline increase was observed in two patients, and there was a lactate peak in three patients, and both a choline increase and lactate peak in one patient. On DTI, there was fiber distortion in five patients and fiber deformation in one patient. Conclusion Advanced MRI techniques and 3D volumetric high-resolution MRI sequences can provide a valuable contribution to the diagnosis and can be successfully used in the management of these lesions.Öğe Detection of the glenoid bare spot by non-arthrographic MR imaging, conventional MR arthrography, and 3D high-resolution T1-weighted VIBE MR arthrography: comparison with CT arthrography(Springer, 2023) Özel, Mehmet Ali; Oğul, Hayri; Köksal, Ali; Köse, Mehmet; Tuncer, Kutsi; Eren, Suat; Kantarcı, MecitObjectivesTo determine the diagnostic accuracy of non-arthrographic MR imaging, conventional MR arthrography, and 3D T1-weighted volumetric interpolated breath-hold examination (VIBE) MR arthrography sequences as compared with a CT arthrography in the diagnosis of glenoid bare spot.MethodsA retrospective study of 216 patients who underwent non-arthrographic MR imaging, conventional MR arthrography, VIBE MRI arthrography, and CT arthrogram between January 2011 and March 2022 was conducted. The diagnostic accuracy of non-arthrographic MR imaging, direct MR arthrography, and VIBE MRI arthrography in the detection of glenoid bare spot was compared with that of CT arthrography. All studies were reviewed by 2 MSK radiologists. Interobserver agreement for MR imaging and MR arthrographic findings was calculated.ResultsSixteen of 216 patients were excluded. Twenty-three of 200 shoulders had glenoid bare spot on CT arthrographic images. The glenoid bare spot was detected in 11 (47.8%) and 7 (30.4%) patients on conventional non-arthrographic MR images and in 18 (78.3%) and 16 (69.6%) patients on conventional MR arthrograms by observers 1 and 2, respectively. Both observers separately described the bare spot in 22 of 23 patients (95.7%) on 3D volumetric MR arthrograms. Interobserver variabilities were fair agreement for conventional non-arthrographic MR imaging (kappa = 0.35, p < 0.05), moderate agreement for conventional MR arthrogram (kappa = 0.50, p < 0.05), and near-perfect agreement for 3D volumetric MR arthrogram reading (kappa = 0.87, p < 0.05).ConclusionsA 3D high-resolution T1-weighted VIBE MR arthrography sequence may yield diagnostic performance that is comparable with that of CT arthrography in the diagnosis of glenoid bare spot.Öğe Diffuse alveolar echinococcosis(Ediciones Doyma, S.L., 2023) Aydın, Yener; Oğul, Hayri; Eren, Suat[No abstract available]Öğe The distribution in joint recesses and adjacent synovial compartments of loose bodies determined on MR and CT arthrographies of ankle joint(British Inst Radiology, 2022) Oğul, Hayri; Çankaya, Bahar; Kantarcı, MecitLoose bodies (LBs) are intraarticular free bodies that result from various pathological processes and cause synovial inflammation. Timely and complete identifica-tion of LBs is important for appropriate treatment and prevention of possible complications such as osteoar-thritis. LBs in the ankle joint can reach all the compart-ments that are adjacent to the joint via physiological or pathological connections. The presence, localisation, and number of LBs in the ankle joint and adjacent synovial compartments can be optimally evaluated using high -resolution magnetic resonance arthrography (MRA) and computed tomography arthrography (CTA). On this review article, we aimed to determine the LB location and distribution using high-resolution MRA and CTA of the ankle joint, and to demonstrate that it may be used as a complementary examination to guide interventional arthroscopy in difficult- to- reach areas during treatment. Advances in knowledge Loose bodies (LBs) are intraar-ticular free bodies and may cause synovial inflammation. Accurate and complete determination of the number and location of LBs before surgery are very important for effective treatment. The location, number and distribution of LBs in the ankle joint may be determined successfully by high-resolution magnetic resonance arthrography (MRA) and computed tomography arthrography (CTA). For this purpose, MRA and CTA may increase the diag-nostic and therapeutic success of the arthroscopy.
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