Halaman 4 - Gastroenterologi Gastroenterologis Terbaik di Istambul - TOP-73 dokter

Dr. Erdem Koçak is a gastroenterologist with international training. He is certified in advanced endoscopic and bariatric procedures from Johns Hopkins University (USA) and Hallym University (South Korea). Dr. Koçak is one of the few Turkish specialists with global accreditation in advanced endoscopic techniques.

He is known for minimally invasive treatments of early-stage gastrointestinal tumors. Dr. Koçak provides non-surgical options for esophageal, gastric, and colorectal cancers. He is also a pioneer in non-surgical obesity treatments, such as gastric balloon and stomach Botox procedures.

Dr. Koçak has published over 100 international scientific articles and contributed to three book chapters. He has presented at more than 100 medical congresses. He is recognized as a leading academic in his field. Dr. Koçak is trained in both internal medicine and gastroenterology. He works as a chief physician and specialist in major hospitals across Turkey.

He is a member of five respected medical associations, including the Turkish Society of Gastroenterology and TSGE. This ensures he stays updated with the latest medical advances.

Areas of Interests

• General Gastrointestinal Diseases
• Endoscopic procedures (gastroscopy, colonoscopy, enteroscopy, capsule endoscopy)
• Interventional endoscopy
• ERCP
• Endoscopic ultrasonography (EUS)
• Cholangioscopy
• Diseases of the biliary system and pancreas

Education:
 

• 1990 -1996 Ankara University Faculty of Medicine
• 1997 - 2001 Ankara Numune Training and Research Hospital Internal Medicine Residency
• 2001 - 2003 Turkey High Specialization Training and Research Hospital, Gastroenterology Subspecialization
• 2010 - 2010 State University of New York, USA, Department of Gastroenterology, EUS training program
   

Experience:
 

• June 2024 LIV Hospital Ulus Hospital
• 2018 - 2024 Florence Nightingale Hospitals, Gastroenterology Clinic
• 2013 - 2018 Memorial Ataşehir Hospital, Gastroenterology Clinic
• 2008 - 2013 Gaziantep University Faculty of Medicine, Department of Gastroenterology, Assoc. Prof. Dr.
• 2008 - 2008 Medicalpark Gaziantep Hospital Gastroenterology Clinic
• 2004 - 2008 Gaziantep State Hospital Gastroenterology Clinic, Endoscopy Unit Founding Physician

Publications

• Arhan M, Koklu S, Koksal AS, Yolcu OF, Koruk S, Koruk I, Kayacetin E. Alverine citrate induced acute hepatitis. World J Gastroenterol 2004; 10(15): 2303-4  ISSN: 1007-9327
• Parlak E, Cicek B, Koruk I, Disibeyaz S, Sahin B. Successful prevention of stent migration caused by placement of a second stent. Endoscopy. 2005; 37(4): 404. ISSN: 0013-726X
• Koruk I, Ozturk ZA, Köklü S, Koruk S, Ozdede S. Port-site metastasis after laparoscopic cholecystectomy. Acta Gastroenterol Belg. 2008; 71(2): 283-4      ISSN:0001-5644
• Koruk I, Parlak E, Secilmis S, Akdogan M, Koklu S.  Endoscopic sphincteroplasty with large balloon dilatation for extraction of difficult common bile duct stones. Dig Dis Sci. 2008 Jun;53(6):1737-8. ISSN: 0163-2116
• Ozkaya M, Yuzbasioglu MF, Koruk I, Cakal E, Sahin M, Cakal B. Preoperative detection of insulinomas: two case reports. Cases J. 2008 Nov 29; 1(1): 362  ISSN: 1757-1626
• Yılmaz Ö, Koruk İ, Çayır K, Koruk M, Yılmaz A. Usefullness of serum insulin-like growth factor (IGF-1) and insulin-like growth factor binding protein-3 (IGFBP-3) for colorectal cancer diagnosis. Int J Hematol Oncol 2009; 19(1): 23-27  ISSN: 1306-133X
• Savaş C, Koruk İ, Koruk M, Kadayıfçı A, Sarı İ. Association of prion protein with the stage of liver fibrosis in chronic viral hepatitis. Trakya Univ Tip Fak Derg. 2010; 27(4): 373-7. DOI: 10.5174/tutfd.2009.02284.1 ISSN: 1301-3149
• Buyukberber M, Koruk I, Cıkman O, Koruk M, Kucukoglu ME, Sakman A, Demir O, Sahinoz S. Serum cystatin C measurement in differential diagnosis of intra and extrahepatic cholestatic diseases. Ann Hepatol 2010; 9(1): 58-62  ISSN: 1665-2681
• Gulsen MT, Koruk I, Dogan M, Beyazit Y. Diagnostic accuracy of cascade stomach by upper gastrointestinal endoscopy in patients with obscure symptoms: A multi-center prospective trial. Clin Res Hepatol Gastroenterol. 2011; 35: 489-93. DOI: 10.1016/j.clinre.2011.03.004         ISSN: 2210-7401
• Koruk I, Aydın U, Koruk S, Aydınlı M. A newly defined biliary anatomic variation. Turk J Gastroenterol 2011; April 22(2): 232-3  DOI:10.4318/ tjg.2011.0204  ISSN: 1300-4948
• Koruk İ, Özdemir H, Aydınlı M, Tarakçıoğlu M, Koruk M. The relation between serum Cytokeratin 18 and acute pancreatitis: Can it be a serological predictive marker?. Turk J Gastroenterol. 2011. DOI:10.4318/tjg.2011.0256 ISSN: 1300-4948
• Aydinli M, Koruk I, Koruk S, Aydin U, Kadayifci A. Intraoperative cholangioscopy with an ultrathin endoscope for hemobilia. Endoscopy 2011;43 Suppl 2 UCTN:E410. doi: 10.1055/s-0030-1256897. Epub 2012 Jan 24
• Aydinli M, Koruk I, Dag MS, Savas MC, Kadayifci A. Ultrathin endoscopy for gastrointestinal strictures. Digestive Endoscopy 2012 May;24(3):150-3. doi: 10.1111/j.1443-1661.2011.01206.x. Epub 2011 Oct 27                 ISSN: 0915-5635
• Yılmaz Ö, Koruk İ, Onbaş O, Ozgokce M. Portal venous gas resulting from enteritis in a case with portal hypertension: Case report. Türkiye Klinikleri Tıp Bilimleri Dergisi. 2012; 32 (4): 1195-8 ISSN: 1300-0292
• Demiryürek S, Koruk I, Bozdag Z, Ozkara E, Kaplan DS, Oztuzcu S, Cetinkaya A, Alasehirli B, Demiryürek AT. Investigation of the esophageal Rho-kinase expression in patients with Barrett's esophagus. Ultrastruct Pathol. 2013 Aug;37(4):284-9. doi: 10.3109/01913123.2013.797064        ISSN: 0191-3123
• Dag MS, Ozturk ZA, Koruk I, Kısacık B, Gerenli O, Aydınlı M, Kadayıfcı A. Intestinal Behcet's disease with severe pulmonary arterial involvement mimicking ulcerative colitis. Asian Biomedicine. 2013; 7(5): 715-8      ISSN: 1905-7415
• Dağ MS, Aydınlı M, Oztürk ZA, Türkbeyler IH, Koruk I, Savaş MC, Koruk M, Kadayıfçı A. Drug- and herb-induced liver injury: a case series from a single center. Turk J Gastroenterol. 2014 Feb;25(1):41-5. doi: 10.5152/tjg.2014.4486ISSN: 1300-4948
• Kadayifci A, Atar M, Parlar S, Balkan A, Koruk I, Koruk M. Transnasal endoscopy is preferred by transoral endoscopy experienced patients. J Gastrointestin Liver Dis. 2014 Mar;23(1):27-31     ISSN: 1841-8724
• Alasehirli B, Oğuz E, Oksuzler E, Koruk I, Oztuzcu S, Ozkara E, Karakok M, Erbagcı AB, Demiryurek AT. Investigation of intercellular adhesion molecules (ICAMs) gene expressions in patients with Barrett's esophagus. Tumour Biol. 2014 May;35(5):4907-12. doi: 10.1007/s13277-014-1644-3      ISSN: 1010-4283
• Dag M, Özturk Z, Aydınlı M, Koruk I, Kadayfçı A. Postpartum hepatotoxicity due to herbal medicine Teucrium polium. Ann Saudi Med. 2014 Nov-Dec;34(6):541-3. doi: 10.5144/0256-4947.2014.541        ISSN: 0256-4947
• Tahtacı M, İbiş M, Koruk İ, Parlak E. Endoscopic removal of fractured basket traction wire. Turk J Gastroenterol. 2014 Dec;25 Suppl 1:324-5. doi: 10.5152/tjg.2014.6582            ISSN: 1300-4948
• Dağ MS, Koruk İ, Aydınlı M, Çam H, Öztürk ZA, Kadayıfçı A. An unusual cause of esophageal ulcer; sertraline hydrochloride. Turk J Gastroenterol. 2014 Dec;25 Suppl 1:250-1. doi: 10.5152/tjg.2014.4646  ISSN: 1300-4948
• Balkan A, Yılmaz N, Balkan Y, Koruk İ, Örkmez M, Aydınlı M, Koruk M. Relationship between liver injury and serum cytokeratin 18 levels in asymptomatic hepatitis B virus carriers and in patients with chronic hepatitis B infection. Arab Journal of Gastroenterology. 2017; 18: 98–103                   ISSN: 1687-1979
• Koruk İ. How to manage difficult cannulation in ERCP. Gastroenterology and Hepatology: Open Access. 2017, 6(3): 00194. DOI: 10.15406/ghoa.2017.06.00194 ISSN: 2373-6372
• Valori R, Cortas G, de Lange T, Balfaqih OS, de Pater M, Eisendrath P, Falt P, Koruk I, et al.  Performance measures for endoscopy services: A European Society of Gastrointestinal Endoscopy (ESGE) Quality Improvement Initiative.  Endoscopy 2018; 50: 1186–1204   ISSN 0013-726X
• Koruk S, Koruk I, Mizrak A. A, Bilgi M, Gul R, Bozgeyik S. Dexmedetomidine or midazolam in combination with propofol for sedation in endoscopic retrograde cholangiopancreatography: a randomized double blind prospective study. Videosurgery Miniinv. 2020; 15(3): 526-32 doi.org/10.5114/wiitm.2020.95066

Areas of Interests

• 0-18 Years Old Healthy Child Monitoring and Tracking
• Breast Milk, Breastfeeding and Nutrition Consultancy
• Newborn Care and Follow-up
• Vaccines and Preventive Medicine
• Nutrition in Infancy and Childhood
• Childhood Diseases

Education:

• Istanbul University Istanbul Faculty of Medicine 2009-2015
• Istanbul University Istanbul Faculty of Medicine Department of Child Health and Diseases 2016-2019
• Şişli Hamidiye Etfal Training and Research Hospital, Department of Child Health and Diseases 2020

Experience:

• Liv Hospital Ulus
• Private Levent Hospital 2022-2023
• Van Özalp State Hospital 2021-2022
• Şişli Hamidiye Etfal Training and Research Hospital Child Health and Diseases Clinic 2020
• Istanbul University Istanbul Faculty of Medicine Child Health and Diseases Clinic 2016-2019
• Denizli State Hospital Pediatric Emergency Service 2015-2016
•  
• Psoriatic Arthritis in the Differential Diagnosis of Zinc Deficiency - Scientific Poster Presentation (38th Pediatrics Days - 2016)
• Myoclonic Epilepsy in a Patient with Type 1 Diabetes Mellitus - Scientific Poster Presentation (39th Pediatrics Days - 2017)
• Evaluation of Children Diagnosed with Acute Pancreatitis - Specialization Thesis (November 2020)

Dr. Levent Demirturk is a gastroenterologist with over 40 years of experience. He graduated from Hacettepe University Faculty of Medicine in 1982. He completed his Internal Medicine training at GATA in 1989. He then specialized in Gastroenterology in 1992.

Dr. Demirturk has held important academic roles, including Professor and Ward Chief at GATA Haydarpaşa. He was also a member of the Higher Science Council. He has made valuable contributions to clinical practice and medical education. He has led teams and managed cases at major hospitals such as Emsey and Hisar.

Dr. Binnur Simsek is a gastroenterology specialist. She has experience in liver cirrhosis, portal hypertension, hepatocellular carcinoma, liver transplantation, and viral hepatitis (B, C, Delta). She also treats alcoholic and non-alcoholic fatty liver disease, peptic ulcers, gastrointestinal bleeding, and inflammatory bowel diseases such as ulcerative colitis and Crohn’s colitis.

She completed her medical and gastroenterology training at Istanbul University Faculty of Medicine. Dr. Simsek has worked at Istanbul University, Sanlıurfa Education and Research Hospital, Liv Hospital, and Istinye University. She is a member of the Turkish Association for the Study of the Liver and the Turkish Society of Gastroenterology.

Prof. Dr. Adil Baykan is a leading general and oncological surgeon in Turkey. He has over 28 years of clinical experience. He specializes in colorectal, endoscopic, and laparoscopic surgeries. He also treats thyroid and breast diseases.

Dr. Baykan has published several articles on colon cancer in national and international journals. He completed advanced training at St. Mark’s Hospital in London, the University of Minnesota, and the Mayo Clinic in the USA. He holds important academic and surgical roles at top hospitals in Turkey.

Dr. Abdurrahman Kadayifci is a leading gastroenterologist. He specializes in interventional endoscopy, fatty liver disease, pancreatic cysts, and pancreatic cancer. He founded the Gastroenterology Department and the Gastrointestinal Endoscopy Center at Gaziantep University Medical School. His work has improved medical care in the region.

Dr. Kadayifci has conducted research at top institutions such as the University of California and Harvard Medical School. His research focuses on liver transplantation and early diagnosis of pancreatic cancer. He has co-authored major textbooks and published many articles in respected journals. His work has made him a recognized expert in his field.

Dr. Muhammed Zubeyr Üçüncü is an Associate Professor of Surgery and a specialist in General Surgery. He earned his medical degree from Istanbul University, Istanbul Medicine Faculty. He is known for his skills in acute biliary pancreatitis, endoscopy, trauma and emergency surgery, obesity, and breast health.

Dr. Üçüncü has published more than 15 peer-reviewed articles. His research covers breast cancer, gastrointestinal diseases, and surgical methods. He has presented his work at international congresses, including the SIS World Congress on Breast Healthcare and the European Congress of Trauma and Emergency Surgery.

He is certified in Advanced Trauma Life Support and Advanced Endoscopy. He is also a member of the International Federation for the Surgery of Obesity and Metabolic Disorders. Dr. Üçüncü has helped improve breast cancer prognosis and minimally invasive surgery in Turkey.