Araştırma Çıktıları | WoS | Scopus | TR-Dizin | PubMed
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Publication Open Access Diffuse Idiopathic Colonic Varices: Demonstration Using Multiplanar Reconstructions from Triphasic Computed Tomography(Galenos Publishing House, 2023) Demir, Mustafa Kemal; Ecertastan, Ozge; Demir, Mustafa Kemal, Department of Radiology, Bahçeşehir Üniversitesi, Istanbul, Turkey; Ecertastan, Ozge, Faculty of Medicine, Bahçeşehir Üniversitesi, Istanbul, Turkey[No abstract available]Publication Open Access Coincidence of Asymptomatic Aorto-left Atrial Fistula and Aneurysmatic Aberrant Right Subclavian Artery: The Relevance of Multidetector Computed Tomography Angiography(Galenos Publishing House, 2024) Demir, Mustafa Kemal; Güler, Mustafa; Ecertastan, Ozge; Akinci, Okan; Eyiişler, Vedat; Demir, Mustafa Kemal, Department of Radiology, Bahçeşehir Üniversitesi, Istanbul, Turkey; Güler, Mustafa, Department of Cardiovascular Surgery, Bahçeşehir Üniversitesi, Istanbul, Turkey; Ecertastan, Ozge, Intern Medical Student, Bahçeşehir Üniversitesi, Istanbul, Turkey; Akinci, Okan, Clinic of Radiology, University of Health Sciences, Istanbul, Turkey; Eyiişler, Vedat, Department of Radiology, Bahçeşehir Üniversitesi, Istanbul, Turkey[No abstract available]Publication Open Access Ectopic Pituitary Neuroendocrine Tumors/Adenomas Around the Sella Turcica(Galenos Publishing House, 2024) Demir, Mustafa Kemal; Ertem, Onder; Kilic, Deniz; Akinci, Okan; Ecertastan, Ozge; Konya, Deniz; Kilic, Turker D.; Demir, Mustafa Kemal, Department of Radiology, Bahçeşehir Üniversitesi, Istanbul, Turkey; Ertem, Onder, Department of Neurosurgery, Bahçeşehir Üniversitesi, Istanbul, Turkey; Kilic, Deniz, Department of Neurosurgery, Bahçeşehir Üniversitesi, Istanbul, Turkey; Akinci, Okan, Clinic of Radiology, University of Health Sciences, Istanbul, Turkey; Ecertastan, Ozge, Faculty of Medicine, Bahçeşehir Üniversitesi, Istanbul, Turkey; Konya, Deniz, Department of Neurosurgery, Bahçeşehir Üniversitesi, Istanbul, Turkey; Kilic, Turker D., Department of Neurosurgery, Bahçeşehir Üniversitesi, Istanbul, TurkeyFunctional or non-secretory ectopic pituitary neuroendocrine tumors (PitNET) can form around the sella turcica during the development of the adenohypophysis by differentiating and detaching from the pharyngeal roof. These tumors usually appear in the sphenoid sinus, clivus, cavernous sinus, infundibulum, and suprasellar cistern. Ectopic PitNETs typically display the characteristic magnetic resonance imaging findings of pituitary adenomas. However, preoperative diagnosis of PitNETs is usually challenging because of the variety of clinical and imaging presentations, locations, and sizes. Ectopic suprasellar PitNETs resemble mass lesions in the pituitary stalk. Ectopic cavernous sinus of PitNETs are typically microadenomas in the medial wall. Ectopic sphenoclival tumors are characterized by more aggressive tumor activity than the other ectopic PitNETs. Although ectopic PitNETs are exceedingly rare, they should be considered as a differential diagnosis for masses around the sella turcica. Treatment of the disease should be individualized and may include medical care, surgical resection, gamma-knife radiosurgery, and radiotherapy. © 2024 Elsevier B.V., All rights reserved.Publication Metadata only Chronic ectopic pregnancy: magnetic resonance imaging diagnosis(MA Healthcare Ltd, 2024) Demir, Mustafa Kemal; Ecertastan, Ozge; Taşçı, Tolga; Akinci, Okan; Demir, Mustafa Kemal, Department of Radiology, Medical Park Hospital, Bursa, Turkey; Ecertastan, Ozge, Department of Radiology, Bahçeşehir Üniversitesi, Istanbul, Turkey; Taşçı, Tolga, Department of Obstetrics and Gynecology, Bahçeşehir Üniversitesi, Istanbul, Turkey; Akinci, Okan, Department of Radiology, University of Health Sciences, Istanbul, Turkey[No abstract available]Publication Metadata only Intracranial extra-axial chondromas: clues to computed tomography and magnetic resonance imaging diagnosis(Springer Science and Business Media Deutschland GmbH, 2024) Demir, Mustafa Kemal; Kurtkaya-Yapicier, Özlem Sahan; Ertem, Onder; Ecertastan, Ozge; Kilic, Deniz; Güzel, Aslan I.; Kilic, Turker D.; Demir, Mustafa Kemal, Clinic of Radiology, Medical Park Hospital, Bursa, Turkey; Kurtkaya-Yapicier, Özlem Sahan, Department of Pathology, Bahçeşehir Üniversitesi, Istanbul, Turkey; Ertem, Onder, Department of Neurosurgery, Bahçeşehir Üniversitesi, Istanbul, Turkey; Ecertastan, Ozge, Intern Medical Student, Bahçeşehir Üniversitesi, Istanbul, Turkey; Kilic, Deniz, Department of Neurosurgery, Bahçeşehir Üniversitesi, Istanbul, Turkey; Güzel, Aslan I., Department of Neurosurgery, Bahçeşehir Üniversitesi, Istanbul, Turkey; Kilic, Turker D., Department of Neurosurgery, Bahçeşehir Üniversitesi, Istanbul, TurkeyAim: We aimed to describe the computed tomography (CT) and magnetic resonance (MR) imaging findings of intracranial extra-axial chondroma. Material and methods: We retrospectively evaluated the imaging findings of CT and MR examinations of six patients (three men and three women, aged 21–66 years) with histopathological diagnoses of intracranial extra-axial chondroma. Results: Four tumors were located in the frontal region and two in the cavernous sinus. All the tumors showed low signals on diffusion-weighted images and high signals on apparent diffusion coefficient maps without restricted diffusion. There was no perifocal edema in all the tumors. Cavernous sinus chondromas were associated with bone erosion and anterior displacement of the internal carotid arteries, but without calcification. Calcification was present in all frontal chondromas. All the tumors revealed low signals on T1-weighted MR images. Frontal chondromas revealed mixed signals, but cavernous sinus chondromas were brightly hyperintense on T2-weighted MR images. No enhancement was detected in the two chondromas. An intense homogeneous enhancement was detected in a cavernous sinus chondroma. Conclusion: The imaging appearances of frontal extra-axial chondromas and cavernous sinus chondromas may have different imaging appearances. Although there is a wide range of imaging findings, the absence of restricted diffusion, perifocal edema, enhancement, and presence of low signals on T1-weighted MR images in a well-circumscribed calcified extra-axial mass should suggest an intracranial chondroma. © 2024 Elsevier B.V., All rights reserved.