Araştırma Çıktıları | WoS | Scopus | TR-Dizin | PubMed
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Publication Metadata only Imaging Findings of the Unusual Presentations, Associations and Clinical Mimics of Acute Appendicitis(AVES, 2017) Demir, Mustafa Kemal; Savas, Yildiray; Furuncuoglu, Yavuz; Cevher, Tarik; Demiral, Serdar; Tabandeh, Babek; Aslan, Melisa; Bahcesehir University; Medical Park Hospitals Group; Istanbul Haseki Training & Research Hospital; Bahcesehir University; Medical Park Hospitals Group; Medical Park Hospitals Group; Bahcesehir University; Medical Park Hospitals Group; Bahcesehir UniversityThere are many kinds of unusual presentations or associations and clinical mimics of acute appendicitis, and definitive diagnosis requires knowledge of the imaging findings in some cases. The unusual presentations and associations of acute appendicitis included in this study are perforated appendicitis, acute appendicitis occurring in hernias, acute appendicitis with cystic endosalpingiosis, intussusception of appendix, and acute appendicitis with pregnancy. We also present uncommon gastrointestinal, urinary and gynecologic clinical mimics of acute appendicitis including anomalous congenital band, duplication cysts, giant Meckel's diverticulitis, inflammatory fibroid polyp, renal artery thrombosis, spontaneous urinary extravasation and OHVIRA syndrome. Familiarity with these entities may improve diagnostic accuracy and enable the quickest and most appropriate clinical management.Publication Metadata only Rare Solitary Primary Osseous Lesions of the Spine in Adults, Challenges in CT and MR Imaging Diagnosis With Pathological Correlation(JOURNAL NEUROLOGICAL SCIENCES, 2015) Toktas, Zafer Orkun; Yilmaz, Baran; Akakin, Akin; Demir, Mustafa Kemal; Yapicier, Ozlem; Onat, Elif; Urgun, Kamran; Konya, Deniz; Bahcesehir University; Bahcesehir University; Bahcesehir UniversityThis pictorial essay is a review of the computerized tomography and magnetic resonance imaging of a few solitary primary osseous lesions encountered in the adults. The lesions discussed include giant cell tumor, Langerhans cell histiocytosis, Paget'sdisease, plasmacytoma, fibrous dysplasia and osteoblastoma. Challenges in computerized tomography and magnetic resonance imaging diagnosis of these lesions are mentioned with clinicoradiological differential diagnosis, and include pathological correlation. Although active diagnosis and radiological familiarity of these lesions is crucial for preventing unnecessary examinations or procedures, pathological evaluation is mandatory to establish final diagnosis.Publication Metadata only Posterior fossa astroblastoma in a child: a case report and a review of the literature(SPRINGER, 2019) Yapicier, Ozlem; Demir, Mustafa Kemal; Ozdamarlar, Umut; Kilic, Deniz; Akakin, Akin; Kilic, Tuerker; Bahcesehir University; Bahcesehir University; Bahcesehir University; Bahcesehir UniversityA 4-year-old girl presented to the hospital with a progressive headache, difficulty walking, and persistent daily vomiting for 3weeks. Papilledema was observed on fundoscopic examination. A large left cerebellovermian tumor with bubbly appearance was discovered. Total removal of the tumor mass was performed, and a diagnosis of low-grade astroblastoma was made. Adjuvant radiotherapy was performed due to the risk of recurrence. The patient is disease-free and has been kept on close follow-up for 6months. The occurrence of posterior fossa astroblastoma has been rarely reported in the literature. Thus, when a bubby appearance enhancing cystic solid tumor is located on the cerebellar hemisphere in a child, an astroblastoma should also be included in the differential diagnosis.Publication Metadata only Magnetic resonance imaging findings of mixed neuronal-glial tumors with pathologic correlation: a review(SPRINGER HEIDELBERG, 2018) Demir, Mustafa Kemal; Yapicier, Ozlem; Yilmaz, Baran; Kilic, Turker; Bahcesehir University; Bahcesehir University; Bahcesehir UniversityMixed neuronal-glial tumors are rare, and MRI diagnosis of them presents a challenge. In this review, we discuss the MRI findings of ganglioglioma, anaplastic ganglioglioma, desmoplastic infantile ganglioglioma, papillary glioneuronal tumor, rosette-forming glioneuronal tumor, and primary diffuse leptomeningeal glioneuronal tumor with clinicopathologic correlation. There is overlap of imaging features both with each other and some other tumors, which complicates diagnosis. The combination of imaging findings and the age, location, and appropriate clinical picture should allow the radiologist and the clinicians to raise a provisional diagnosis of a mixed neuronal glial tumor, and guide patient management.Publication Open Access Imaging findings of the unusual presentations, associations and clinical mimics of acute appendicitis, Akut apandisitin alışılmadık sunum, birliktelik ve klinik taklitlerinin görüntüleme bulguları(AVES Ibrahim Kara 105/9 Buyukdere Cad Mecidiyekoy,Sisli, Istanbul 34394, 2017) Demir, Mustafa Kemal; Savaş, Yildiray; Furuncuoǧlu, Yavuz; Cevher, Tarik; Demiral, Serdar; Tabandeh, Babek; Aslan, Melisa; Demir, Mustafa Kemal, Department of Radiology, Bahçeşehir Üniversitesi, Istanbul, Turkey; Savaş, Yildiray, Department of Radiology, Haseki Education and Research Hospital, Istanbul, Turkey; Furuncuoǧlu, Yavuz, Department of Internal Medicine, Bahçeşehir Üniversitesi, Istanbul, Turkey; Cevher, Tarik, Department of Surgery, Medical Park Hospital, Bursa, Turkey; Demiral, Serdar, Department of Surgery, Acibadem Kadiköy Hospital, Kadikoy, Turkey; Tabandeh, Babek, Department of Surgery, Bahçeşehir Üniversitesi, Istanbul, Turkey; Aslan, Melisa, Bahçeşehir Üniversitesi, Istanbul, TurkeyThere are many kinds of unusual presentations or associations and clinical mimics of acute appendicitis, and definitive diagnosis requires knowledge of the imaging findings in some cases. The unusual presentations and associations of acute appendicitis included in this study are perforated appendicitis, acute appendicitis occurring in hernias, acute appendicitis with cystic endosalpingiosis, intussusception of appendix, and acute appendicitis with pregnancy. We also present uncommon gastrointestinal, urinary and gynecologic clinical mimics of acute appendicitis including anomalous congenital band, duplication cysts, giant Meckel’s diverticulitis, inflammatory fibroid polyp, renal artery thrombosis, spontaneous urinary extravasation and OHVIRA syndrome. Familiarity with these entities may improve diagnostic accuracy and enable the quickest and most appropriate clinical management. © 2017 Elsevier B.V., All rights reserved.Publication Metadata only Magnetic resonance imaging findings of mixed neuronal–glial tumors with pathologic correlation: a review(Springer-Verlag Italia s.r.l. springer@springer.it, 2018) Demir, Mustafa Kemal; Kurtkaya-Yapicier, Özlem Sahan; Yilmaz, Baran; Kilic, Turker D.; Demir, Mustafa Kemal, Department of Radiology, Bahçeşehir Üniversitesi, Istanbul, Turkey; Kurtkaya-Yapicier, Özlem Sahan, Department of Pathology, Bahçeşehir Üniversitesi, Istanbul, Turkey; Yilmaz, Baran, Department of Neurosurgery, Bahçeşehir Üniversitesi, Istanbul, Turkey; Kilic, Turker D., Department of Neurosurgery, Bahçeşehir Üniversitesi, Istanbul, TurkeyMixed neuronal–glial tumors are rare, and MRI diagnosis of them presents a challenge. In this review, we discuss the MRI findings of ganglioglioma, anaplastic ganglioglioma, desmoplastic infantile ganglioglioma, papillary glioneuronal tumor, rosette-forming glioneuronal tumor, and primary diffuse leptomeningeal glioneuronal tumor with clinicopathologic correlation. There is overlap of imaging features both with each other and some other tumors, which complicates diagnosis. The combination of imaging findings and the age, location, and appropriate clinical picture should allow the radiologist and the clinicians to raise a provisional diagnosis of a mixed neuronal glial tumor, and guide patient management. © 2019 Elsevier B.V., All rights reserved.Publication Open Access Rare Solitary Primary Osseous Lesions of the Spine in Adults, Challenges in CT and MR Imaging Diagnosis With Pathological Correlation(2015) Şahan Yapıcıer, Özlem; Toktaş, Zafer Orkun; Akakın, Akın; Yılmaz, Baran; Urgun, Kamran; Onat, Elif; Demir, Mustafa Kemal; Konya, Deniz; Bahçeşehir Üniversitesi; Bahçeşehir Üniversitesi; Bahçeşehir Üniversitesi; Bahçeşehir Üniversitesi; Bahçeşehir Üniversitesi; Bahçeşehir Üniversitesi; Bahçeşehir Üniversitesi; Bahçeşehir ÜniversitesiBu inceleme yazısında, yetişkinlerde gözlemlenen birkaç çeşit primer soliter kemiklezyonunun bilgisayarlı tomografi ve manyetik rezonans görüntüleme iledeğerlendirilmelerini gözden geçirmeyi hedefledik. Büyük hücreli tümör, Langerhans hücrelihistiositoz, Paget hastalığı, plazmasitom, fibrozdisplazi ve osteoblastom lezyonlarındanbahsedildi. Bu lezyonların bilgisayarlı tomografi ve manyetik rezonans görüntülemelerleyapılan radyolojik tetkiklerinde tanı koyma esnasındaki zorluklar, bu lezyonların klinik- radyolojik ayırıcı tanılarından ve patoloji ile korelasyonlarından bahsederek, anlatılmıştır. Herne kadar gereksiz tetkik ve müdahaleleri engellemek adına bahsedilen lezyonların radyolojiközelliklerini iyi bilmek gerekse de, kesin tanı patolojik inceleme ile mümkündür.