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Specializations
RIRS (Laser Stone Breaking in the Kidney)
Open-Closed Prostate Surgeries
Urological Cancer Surgeries
Urinary Incontinence Treatment
Infertility Treatment
| Medical Degree | Medicine | Istanbul University, Cerrahpaşa Faculty of Medicine | 2008-2014 |
| Doctorate | Urology | Istanbul University-Cerrahpaşa, Faculty of Medicine | 2015-2020 |
5. Academic Appointments:
Appointed as Faculty Member: 28.03.2022
Associate Professorship: ---
Full Professorship: ---
6. Supervised Theses:
Master's Theses: None listed
Doctoral Theses: None listed
7. Publications:
7.1. Articles Published in International Peer-Reviewed Journals (SCI, SSCI, Arts & Humanities):
"Urodynamic Curve Patterns May Predict Female Bladder Outlet Obstruction and Detrusor Underactivity." Urology, 2022. (Co-authored)
"Are Elevated Mitochondrial DNA Fragments in Prostatic Inflammation a Potential Biomarker for Prostate Cancer?" Archivio Italiano di Urologia e Andrologia, 2023. (Co-authored)
7.2. Articles Published in Other International Peer-Reviewed Journals:
"A Case Report of Pediatric High-Flow Priapism: The Management of a Rare Condition." European Journal of Medical Case Reports, 2021.
"Unusual Presentation of Classical Kaposi Sarcoma: Penile Involvement in an HIV Seronegative Patient." European Journal of Medical Case Reports, 2023.
7.3. Papers Presented at International Scientific Meetings:
Multiple presentations at international urology congresses. (Details available upon request.)
7.4. International Book Chapters:
Aferin U. "Approach to Muscle Invasive Bladder Cancer," in Current Perspective in Urooncology, Akademiyen Kitabevi, 2022. ISBN: 978-625-8259-52-0, p.147
7.5. Articles Published in National Peer-Reviewed Journals:
"Massive Inguinoscrotal Bladder Hernia and Bladder Tumor: A Very Rare Case." J Urol Surg, 2018.
"Testicular Torsion: Experience in a Tertiary Urology Referral Centre." Journal of Urological Surgery, 2021.
"Association Between Prostate Biopsy Results and Serum Vitamin D Levels." Bulletin of Urooncology, 2021.
"Surgical Treatment in Localized Prostate Cancer." Cancer Agenda Journal, 2022.
7.6. Papers Presented at National Scientific Meetings (with Proceedings):
Participated and presented in multiple national urological congresses on topics including penile plication, robotic nephrectomy, and pediatric urological conditions. (Full list available upon request.)
Dr. Zuhal Cakmak Peksen is a Family Medicine Specialist since 2017. She earned her MD from Çukurova University in 2010. She completed specialty training at Yüzüncü Yıl University between 2013 and 2017. She is currently studying for a bachelor’s degree in Health Management at Anadolu University (2024–present).
She has 15 years of clinical practice (2010–2025) across 8 institutions. Her experience includes research in Family Medicine (2013–2017) and work at several Family Health Centers. Since 2020, she has served at TOKİ Avrupa Family Health Center in Gaziosmanpaşa, Istanbul.
1998 - Undergraduate (Medicine): Istanbul University Faculty of Medicine
2004 - Master’s Degree: Istanbul University Faculty of Medicine
2005 - 2011 - PhD (Urology): Taksim Training and Research Hospital
2020 - Associate Professor: Yeni Yüzyıl University
2011 to 2013 - Urology Specialist: Kastamonu Dr. Münif Islamoğlu State Hospital
2013 to 2014 - Urology Specialist: Izmir Private Marine Hospital
2014 to 2014 - Urology Specialist: Istanbul Murat Kölük State Hospital
2014 to 2016 - Urology Specialist: Gaziosmanpaşa Taksim Training and Research Hospital
2016 to 2020 - Faculty Member: Yeni Yüzyıl University Gaziosmanpaşa Hospital
2020 - Associate Professor: Yeni Yüzyıl University Gaziosmanpaşa Hospital
Articles Published in International Refereed Journals: A1
1)NUHOĞLU BARIŞ, BALCI MUSTAFA BAHADIR CAN, AYDIN MEMDUH, HAZAR İSMET, ONUK ÖZKAN, TAŞ TUNCAY, FİKRİ ONUR (2011). The Role of Bipolar Transurethral Vaporization in the Management of Benign Prostatic Hyperplasia. Urologia Internationalis.
2)BALCI MUSTAFA BAHADIR CAN, TAŞ TUNCAY, HAZAR İSMET, AYDIN MEMDUH, ONUK ÖZKAN, ÇAKIROĞLU BASRİ, INTELLECTUAL HONOR, ÖZKAN ARİF, NUHOĞLU BARIŞ (2014). Applicability and Effectiveness of Virtual Reality Simulator Training in Urologic Surgery: A Double-Blind Randomized Study. NOBEL MEDIUS.
3)ONUK ÖZKAN, TAŞ TUNCAY, ŞENTÜRK AB, ORHUN SINANOĞLU, BALCI MUSTAFA BAHADIR CAN, ÇELİK O, NUHOĞLU BARIŞ (2014). Right-Sided Bochdalek Hernia with Intrathoracic Ectopic Kidney in an Advanced-Age Adult: A Case Report. Urologia Internationalis.
4)ONUK ÖZKAN, BALCI MUSTAFA BAHADIR CAN, HAZAR İSMET, TAŞ TUNCAY, ÖZKAN ARİF, NUHOĞLU BARIŞ (2015). Giant Bladder Stone in a Young Woman. Journal of Academic Research in Medicine.
5)DİNÇER MUHAMMET MURAT, ONUK ÖZKAN (2015). Phalloplasty and Penile Prosthesis Implantation for Micropenis. Journal of Academic Research in Medicine
6)ONUK ÖZKAN, ARSLAN BURAK, HAZAR İSMET, ÖZKAN ARİF, ÇİLESİZ NUSRET CAN, NUHOĞLU BARIŞ (2016). Clinical Course of a Case with Sarcomatoid Renal Cell Carcinoma. International Journal of Medical and Pharmaceutical Research.
7)BALCI MUSTAFA BAHADIR CAN, ONUK ÖZKAN, HAZAR İSMET, ÖZKAN ARİF, ÇİLESİZ NUSRET CAN, ARSLAN BURAK, NUHOĞLU BARIŞ (2016). Incidental Prostate Cancer Frequency and Features of Patients Undergoing Radical Cystoprostatectomy. Journal of Academic Research in Medicine.
8)HİRİK ERKAN, BOZKURT ALİSEYDİ, KARABAKAN MEHMET, ONUK ÖZKAN, BALCI MUSTAFA BAHADIR CAN, AYDIN MEMDUH, ÇAKAN MURAT, NUHOĞLU BARIŞ (2016). Results of Tadalafil Treatment in Patients Following an Open Nerve-Sparing Radical Prostatectomy. Archivio Italiano di Urologia e Andrologia.
9)ARSLAN BURAK, AKBULUT MEHMET, ONUK ÖZKAN, HAZAR İSMET, ÖZKAN ARİF, GEZMİŞ CEM TUĞRUL, ÇETİN BUĞRA, AYDIN MEMDUH (2016). Risk Factors Affecting the Outcomes of Docetaxel-Prednisone Combination in the Treatment of Metastatic Castration-Resistant Prostate Cancer. British Journal of Medicine and Medical Research.
10)ONUK ÖZKAN, ARSLAN BURAK, YANARAL FATİH, HAZAR İSMET, ÖZKAN ARİF, GEZMİŞ TUĞRUL, NUHOĞLU BARIŞ (2016). Management of Gunshot Injury of Glans Penis that Extends to Anterior Urethra: A Rare Case Report. Haseki Medical Bulletin.
11)ARSLAN BURAK, AKBULUT MEHMET FATİH, ONUK ÖZKAN, KÜÇÜKTOPCU ONUR, ÇİLESİZ NUSRET CAN, ÖZKAN ARİF, YAZICI GÖKHAN (2017). A Comparison of Amplatz Dilators and Metal Dilators for Tract Dilatation in Mini-Minute Nephrolithotomy. International Urology and Nephrology.
12)ARSLAN BURAK, ONUK ÖZKAN, EROĞLU ALİ, GEZMİŞ TUĞRUL, AYDIN MEMDUH (2017). Female Sexual Function Follows a Novel Transobturator Sling Procedure without Paraurethral Dissection (Modified-TOT). International Braz J Urol.
13)ARSLAN BURAK, ONUK ÖZKAN, HAZAR İSMET, AYDIN MUAMMER, ÇİLESİZ NUSRET CAN, EROĞLU ALİ, NUHOĞLU BARIŞ (2017). Prognostic Value of Endocan in Prostate Cancer: Clinicopathologic Association Between Serum Endocan Levels and Biochemical Recurrence after Radical Prostatectomy. Tumori Journal.
14)ONUK ÖZKAN, ÇİSELİS NUSRET CAN, HAZAR İSMET, GÖZMÜŞ TUĞRUL, ÖZCANLI YUSUF TURUSHAN, DİNÇER MUHAMMET MURAT, NUHOĞLU BARIŞ (2016). Treatment of Giant Ureteral Fibroepithelial Polyp: A Case Report Using an Endoscopic Approach. Journal of Academic Research in Medicine.
15)YANARAL FATİH, BALCI MUSTAFA BAHADIR CAN, OZGÖR FARUK, ŞİMŞEK ABDULMUTALİP, ONUK ÖZKAN, AYDIN MUAMMER, NUHOĞLU BARIŞ (2017). Comparison of Conventional Dressings and Vacuum-Assisted Closure in the Wound Therapy of Fournier's Gangrene. Archivio Italiano di Urologia e Andrologia.
16)ONUK ÖZKAN (2018). A Minimally Invasive Modified Technique for Female Stress Urinary Incontinence: Transobturator Tape without Paraurethral Dissection. Videosurgery and Other Miniinvasive Techniques.
17)HAZAR İSMET, ONUK ÖZKAN, ÖZKAN ARİF, KIR GÜLAY, ÇİLESİZ NUSRET CAN, BALCI MUSTAFA BAHADIR CAN, NUHOĞLU BARIŞ (2018). Treatment of Primary Vesicovaginal Fistula Repair with Bladder Mucosal Flap: A Report of Initial Case Series. Journal of Academic Research in Medicine.
18)ONUK ÖZKAN, ARSLAN BURAK, GEZMİŞ TUĞRUL, ÇETİN BUĞRA, GÖV TAHA, YAZICI GÖKHAN, GÜRKAN OKAN, ÖZDEMİR ENVER (2018). Is the Plasma Endocan Level a Reliable Predictor for the Severity of Erectile Dysfunction?. International Urology and Nephrology.
19)ÖZKAN ARİF, ÇİLESİZ NUSRET CAN, KALKANLI ARİF, GÜNSEVEN KADIR ÖMÜR, ONUK ÖZKAN, HAZAR İSMET, BALCI MUSTAFA BAHADIR CAN (2018). Comparison of Local Anesthetic Efficacy of Lidocaine Gel and Lidocaine Gel-Intramuscular Diclofenac Combination in Patients Undergoing Flexible Cystoscopy. Journal of Academic Research in Medicine.
20)ARSLAN BURAK, GÖNÜLTAŞ SERKAN, GÖKMEN ERSİN, ÖZMAN OKTAY, ONUK ÖZKAN, YAZICI GÖKHAN, GÖV TAHA, ÖZDEMİR ENVER (2019). Does YouTube Include High-Quality Resources for Training on Laparoscopic and Robotic Radical Prostatectomy?. World Journal of Urology.
21)ONUK ÖZKAN, NUHOĞLU BARIŞ, ÖZKAN ARİF, TAŞ TUNCAY, ÇİLESİZ NUSRET CAN, HAZAR İSMET, BALCI MUSTAFA BAHADIR CAN (2019). Comparison of Caveolin-1 and PSA in Prostate Adenocarcinoma. Journal of Academic Research in Medicine.
22)ONUK ÖZKAN, ÖZKAN ARİF, ÇİLESİZ NUSRET CAN, KALKANLI ARİF (2019). Vacuum-Assisted Treatment in Fournier Gangrene. Journal of Academic Research in Medicine.
23)LOVMIS M, ONUK ÖZKAN, AKTAŞ S, ALKARA U, MERCİLESS O, LOVMIS S (2020). Two Renal Transplants From Living Donors With Horseshoe Kidneys. Urology.
24)ALİ EROĞLU, MUAMMER AYDIN, ÖZKAN ONUK, NUSRET CAN ÇİLESİZ, BARIŞ NUHOĞLU (2020). Investigation of Sexual Dysfunction in Premenopausal Women with Urinary Incontinence. Journal of Academic Research in Medicine.
25)TUNCAY TAŞ, BASRİ ÇAKIROĞLU, ERSAN ARDA, ÖZKAN ONUK, BARIŞ NUHOĞLU (2021). Early Clinical Results of the Tolerability, Safety, and Efficacy of Autologous Platelet-Rich Plasma Administration in Erectile Dysfunction. Sexual Medicine,.
26)ÖZKAN ONUK, NUSRET CAN ÇİLESİZ, ARİF ÖZKAN, ELBRUS ZARBALİYEV, NURTEN DAYIOĞLU, BARIŞ NUHOĞLU (2020). Urological Injuries in the Civil War of Libya.
Publications and articals goes on.
Experienced cardiac surgeonspecializing in varicoseveins, coronary bypasssurgery, heart valve diseases, aortic aneurysms, heart aneurysms, and TAVI procedures.
Dedicated to providing high-quality care and innovative surgical solutions to patients.
2022 : Professorship, Istanbul Arel University
2015 : Associate Professorship, Şişli Memorial Hospital
1997-2002: Residency in Cardiovascular Surgery,Florence Nightingale Hospital/ Kadir Has University 1989-1995 : Medical Degree, Hacettepe University Medical Faculty (English Program)
1982-1989 : TarsusAmerican College
Varicose Veins
Coronary Bypass Surgery Heart Valve Diseases Aortic Aneurysms
Heart Aneurysms
TAVI (Transcatheter Aortic Valve Implantation) Work Experience:
Current: İstanbul FlorenceNightingale Hastanesi, Cardiovascular Surgery Department Previous: Şişli Memorial Hospital, Cardiovascular Surgery Department
2005 – M.D., Istanbul University, Istanbul Faculty of Medicine
2010 – Internal Medicine Specialization, Haseki Training and Research Hospital
2021 – Gastroenterology Subspecialty Training, Sakarya University Faculty of Medicine
Assistant Professor, Istanbul Florence Nightingale Hospital
Assistant Professor, Istanbul Bilim University Faculty of Medicine
Assistant Professor, Istanbul Yeni Yüzyıl University Faculty of Medicine
Head of Department, Giresun University Faculty of Medicine
Dr. Acar has authored over 20 international peer-reviewed articles in the fields of internal medicine and gastroenterology. Her notable contributions include studies and case reports on:
Gastrointestinal bleeding management in anticoagulant users
Rare GI cases such as bezoars, aortoesophageal fistulas, and massive hemorrhagic ascites
Liver transplantation complications, including graft-versus-host disease
The role of (pro)hepcidin in IBD-related anemia
Endoscopic interventions for acute GI bleeding
Covid-19 treatment agents and their GI implications in Turkey
(Full publication list available upon request)
Gastrointestinal bleeding & endoscopic procedures
Hepatology & liver disease management
Inflammatory bowel diseases (IBD)
Complex GI case diagnostics
Post-transplant GI complications
Diabetic GI and cardiovascular comorbidities
Pediatrician, Pediatric Gastroenterology and Nutrition Specialist
Education
Yeditepe University School of Medicine
Professor of Pediatrics (Chair of the Department)
2004 - 2007
Dokuz Eylül University School of Medicine
Pediatric Gastroenterology Sub-specialty
1995 – 1998
Hacettepe University School of Medicine
Pediatrics Instructor
1985 - 1987
Professional Experience
Ataşehir Florence Nightingale Hospital
Pediatrician, Pediatric Gastroenterology
2017 – Present
Kadıköy Şifa Ataşehir Hospital
Pediatric Gastroenterology and Nutrition
2013 – 2017
Dokuz Eylül University School of Medicine
Professor of Pediatrics
1994 – 2004
Publications
Cevik N, Buyukgebiz B. Interaction between human blood group (ABO) substances and enteropathogenic
bacterial agents. Turk J Pediatr. 1987. Link
Buyukgebiz B, Ozalp I, Oran O. Investigation of serum vitamin A levels of children who had a history of
recurrent diarrhoea. J Trop Pediatrics. 1990. Link
Languages
Turkish: Native
English: Advanced
Languages: English
Urology
Education
Career
Born in 1978 in Istanbul, Prof. Dr. Ramazan Gökhan ATIŞ completed his medical degree at Istanbul University’s Faculty of Medicine in 2002. He pursued his urology specialization at Şişli Etfal Training and Research Hospital and became a certified urologist in February 2008. Following his military service at Edremit Military Hospital, he began working at Göztepe Training and Research Hospital in 2009.
In 2011, he received training in laparoscopic and robotic urology at Heidelberg University’s Heilbronn Clinic. Between 2009 and 2014, he conducted numerous scientific studies, especially in the field of endourology, earning the title of Associate Professor in 2014.
Since 2017, he has served on the board of the Endourology Society. In 2018, he was selected to the European Association of Urology’s Young Academic Urologists (EAU-YAU) Endourology Working Group, actively serving for two years. In January 2021, he was appointed as a Professor at Istanbul Medeniyet University. Since August 1, 2022, he has continued his clinical practice, initially at Şişli Memorial Hospital and currently at Medipol Acıbadem District Hospital.
Dr. Yigit Changa is an Associate Professor of Cardiology. He received advanced training at Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Training and Research Hospital. He became a cardiology specialist in 2016 and completed his residency in 2010. Dr. Changa is a member of the Turkish Society of Cardiology and the Turkish Medical Association.
He has worked at leading hospitals, including Ataşehir and Kadıköy Florence Nightingale Hospitals. Dr. Changa speaks English fluently. He has a solid academic and clinical background in cardiology.
Prof. Dr. Rifat Eralp Ulusoy is a cardiologist specialized in clinical cardiology and advanced cardiac imaging. He focuses on echocardiography, transesophageal echocardiography, and stress echocardiography. He also treats heart valve disease, hypertension, heart failure, and cardiomyopathies. He has held academic and clinical roles at leading centers in Turkey and the United States. He is a Fellow of the European Society of Cardiology.
He has written more than 125 scientific papers and has over 1,400 citations. His clinical interests include heart tumors and cardiac care for cancer patients. He also works on cardiology in chronic kidney failure and dialysis. Other interests are heart disease in pregnancy, pericardial diseases, and heart valve infections.
Dr. Ergun Tozkoparan is a pulmonologist with expertise in diagnosing and treating lung diseases. He has a special focus on tuberculosis. He received his medical degree from GATA Military Medical School in 1989. He completed his pulmonology training at GATA, Ankara in 1996.
Dr. Tozkoparan has worked in leading hospitals in Turkey. He also served as a professor at the GATA Department of Pulmonology. He gained further experience in interventional pulmonology during a year at the University of Texas, MD Anderson Cancer Center.
In 2007, Dr. Tozkoparan published research in CCLM. He showed important changes in platelet indices in patients with tuberculosis. This work helped improve how the disease is monitored and managed.
Education
Experience
Education and Experience
Education:
Bachelor's Degree
PhD/Medical Specialty
Experience:
General Practitioner
Research Assistant Doctor
Specialist Doctor
Doctor Academic Staff
Dr. Cagdas Erdogan is a gastroenterologist at Ankara Etlik City Hospital. He trained in Internal Medicine and Gastroenterology. He earned his MD from Dokuz Eylul University. He completed his Internal Medicine residency from 2014 to 2019. He then completed a Gastroenterology fellowship at Ankara City Hospital from 2019 to 2022. His clinical focus includes advanced endoscopy (ERCP, EUS, EMR, ESD, POEM, EGD, colonoscopy, double-balloon enteroscopy), inflammatory bowel disease, and hepatology.
He has about 40 publications. His work appears in The Turkish Journal of Gastroenterology, Scientific Reports, Endoscopy, and Digestive Diseases and Sciences. Notable studies address vedolizumab in IBD and prophylaxis for post-ERCP pancreatitis. He also reported a 13-year Crohn’s cohort comparing infliximab and adalimumab. Additional work covers outcomes with an adalimumab biosimilar and innovative endoscopic therapies (MCA via double-balloon enteroscopy, holmium laser for Bouveret syndrome, POEM for Zenker’s diverticulum, and ESD for esophageal papillomatosis).
Specializations
Adult and Pediatric Trauma Surgery
Knee, Shoulder, Ankle Arthroscopic Surgery
Knee Prosthesis, Hip Prosthesis, Shoulder Prosthesis
Deformity and Lengthening Surgery
Sports Surgery
Specializations
RIRS (Laser Stone Breaking in the Kidney)
Open-Closed Prostate Surgeries
Urological Cancer Surgeries
Urinary Incontinence Treatment
Infertility Treatment
Personal information
Title: Associate Professor
Branch: Urology
Work History:
1 Istanbul Ümraniye Training and Research Hospital
2 Kars State Hospital
3 Çatalca İlyas Çokay State Hospital
4 Istanbul Bilim University Faculty of Medicine Urology Clinic
5 Gayrettepe Florence Nightinagle Hospital
Medical Specialties and Subspecialties:
Laparoscopic Surgery
Education
2007 - Istanbul University Cerrahpaşa Faculty of Medicine
2012 - Istanbul Ümraniye Training and Research Hospital (Specialization)
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