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Start date: 2020End date: 2026Subject: search.filters.subject.humanHas files: YesAuthor: search.filters.author.Demir, Mustafa KemalAuthor: search.filters.author.Ertem, Onder

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    PublicationOpen Access
    Morphometry of common carotid artery and internal jugular vein in relation to gender and body side, Arteria Carotis Communis ve Vena Jugularis Interna'nin Cinsiyet ve Vücut Tarafina göre Morfometrisi
    (Gazi Universitesi [email protected], 2020) Ertem, Onder; Demir, Mustafa Kemal; Barut, Cagatay; Ertem, Onder, Bahçeşehir Üniversitesi, Istanbul, Turkey; Demir, Mustafa Kemal, Department of Radiology, Bahçeşehir Üniversitesi, Istanbul, Turkey; Barut, Cagatay, Department of Anatomy, Bahçeşehir Üniversitesi, Istanbul, Turkey
    Introduction: The common carotid arteries originate from brachiocephalic trunk on the right and directly from the aortic arch on the left. These arteries are contained within the carotid sheaths together with the internal jugular veins and vagus nerves. The structures enclosed in carotid sheath are of great importance, since they provide most of the vascular supply of the head and neck. They exhibit a great deal of variation and are related with a number of pathologic conditions and invasive procedures. Objectives: Thus we focused on morphology of the common carotid artery (CCA) and internal jugular vein (IJV) to determine these possible variations. Methods: Neck magnetic resonance images of 81 individuals (38 females and 43 males) were evaluated retrospectively. Diameter of the lumen of the common carotid artery (CD) and the diameters of the lumen of the internal jugular vein (ID) were measured at the same level that is one slice inferior to the slice in which the bifurcation of the CCA is observed firstly. CCA intima-media thickness (CIMT), IJV intima-media thickness (IIMT), CCA-midline distance (CMD) and IJV-midline distance (IMD) were also measured at the aforementioned level. The measurements were evaluated in relation to gender and asymmetry. Results: The values measured for Right CMD, Right IMD, Left CD, Left CMD and Left IMD of males were greater than those of females (p<0.05). The results stressed various morphometric parameters and topography of the IJV and CCA. Conclusion: The results are suggested to be helpful in determination of normal values in terms of diagnostic purposes and treatment planning. © 2020 Elsevier B.V., All rights reserved.
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    PublicationOpen 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, Turkey
    Functional 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.