Dr. Tarık Akar graduated from Cerrahpaşa School of Medicine, Istanbul University in 2000 and was granted the title of “Internist” in 2004. He has published 19 international papers, 6 local papers, and 25 local and international congress presentations. His fields of medical interest include Achalasia, ESD, ERCP, Zenker’s Diverticulum, and Gastroparesis.
Prof. Kopty is a highly qualified specialist in internal medicine, gastroenterology, endoscopy, hepatology, and various liver diseases, with expertise and practical experience in more than 28,000 diagnostic and therapeutic endoscopy specializations. He also has awards and publications in the fields of hepatology, hepatitis C and B, endoscopy, and best clinical endoscopy quality certificates.
Specializations
Cancer Surgery
Pancreatic Surgery
Bile Duct Surgery
Bariatric Metabolic Surgery
Oncological Surgery
Breast Surgery
Gastric cancer
Colon cancer
Thyroid Cancer
Obesity Surgery
Diabetes Surgeries
Dr. Rosen is a specialized abdominal surgeon with expertise in endocrine, gastrointestinal, liver, colon, and appendectomy surgery. He is also experienced in treatments such as anal fissure, gallbladder, gastric anastomosis, and sleeve gastrectomy surgery. He is a member of various medical councils and serves as President of the European Society of Surgery. He is also a professor of surgery at the Vienna Medical School.
Education:
Specialized Education and Experience:
Academic Career:
20 top ranked Gastroscopy with biopsy doctors in the world are represented on this page. The list includes only verified specialists known for their experience and high success rates.
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Dr. Siegbert Rossol is a highly experienced gastroenterologist with over 34 years of experience in the field. He is a member of various medical societies and has studied human medicine, health management, and interventional sonography. He has published numerous articles and has exceptional expertise in endoscopic therapy, endobarrier therapy, and inflammatory bowel disease.
Was born in 1981 in Erzincan. After finishing Beşiktaş Atatürk Anadolu High School in 1999 entered Istanbul University Çapa, Faculty of Medicine.
In 2005 I got his Master Degree and started as a practitioner at Yüksekova State Hospital. He got his Doctorate at Okmeydanı Training and Research Hospital in General Surgery department. As a General Surgery Specialist, he worked at Zonguldak Atatürk State Hospital for 5 years and at Sancaktepe Şehit Prof. Dr. İlhan Varank Training and Research Hospital for 3 years.
Worked as an Assistant Professor at Istanbul Medipol University, Department of General Surgery. Currently working at Medipol University Pendik Hospital.
Dr. Bilal Ergul, MD, is a pioneering force in the field of gastroenterology.
His innovative treatment protocols have transformed the lives of many patients, including a remarkable case where he successfully treated a patient with a Peroral Endoscopic Myotomy (POEM) surgery.
Dr. Bilal Ergul, often says, ‘Healing is more than treating a condition; it’s about restoring hope and improving lives.’ This philosophy is evident in every aspect of his work, making his and his team truly inspirational figure in the medical community."
He has authored around 100 publications in different academic topics
Specializations
Oncological Surgery (Cancer Surgery)
Breast Diseases Surgery
Gallbladder and biliary tract diseases surgery
Thyroid – Parathyroid Surgery
Inguinal and Abdominal Wall Hernia, Stomach Hernia Surgery
Closed (Laparoscopic) Hernia Surgery
Endoscopy Applications
Treatment of Gastrointestinal System Diseases
2011 – 2015, (Internal Medicine Specialist) Istanbul University Istanbul School of Education and Career
Medicine Department of Internal Medicine
2015 – 2016, (Internal Medicine) Specialist Istanbul Haydarpasa Numune Training and Research Hospital
2016 – 2019, (Medical Oncology) Istanbul University Istanbul School of Medicine Department of Medical Oncology
2019 – 2021, (Medical Oncology Specialist) - Istanbul Haydarpasa Numune Training and Research Hospital
2021 – 2024, (Associate Professor) Marmara University School of Medicine Department of Medical Oncology
Memberships in Scientific Organizations
ASCO
ESMO
TTOD
AVOD
Publications
In the field of oncology, he has published over 30 peer-reviewed articles at both international and national levels.
Awards Received
EAACI The European Academy of Allergy and Clinical Immunology 2019 Best Poster Award
"The top 3rd verbal presentation, IGICC (11th International Gastrointestinal Cancers Conference – IGICC2021)"
Speeches Delivered at National Congresses, Conferences, and Symposia:
Courses, Meetings, and Certificates
ESMO certified Medical Oncologist since 2019
Personal Information
Sex: Male
Born : 1968
Professional Experience
Gayrettepe Florence Nigthingale Hospital
Medical Oncology Department
Besiktas/Istanbul/Turkey (ongoing)
Education:
He became Professor (22/April /2016)
Medical Oncology
Attending Phys.in Gastrointestinal Oncology (January 2005 ,2009)
Istanbul University Oncology Institue,
Department of Medical Oncology
Medical Oncology Fellowship (December 2001-December2004)
Istanbul University, Istanbul Medical Faculty
Hemodialysis Traning (May1996-January1997)
Istanbul University ,bCerrahpasa Medical Faculty
Internal Medicine Residency (November 1991-November 1996)
Istanbul University ,bCerrahpasa Medical Faculty
Ege University Medical Faculty (1985-1991)
Professional Experience
February 1999-November 2001
Metropolitan Florence Nigthingale Hospital
American Cancer Center, Gayrettepe/İstanbul
April1997- October 1998
Bayraktar Dialysis Center
Güngören/ Istanbul
Membership
Turkish Medical Oncology Association
ENET(European Neuroendocrine Tumour Society)
ESMO
ASCO
Born in Trabzon in 1972, Dr. İzzettin Kahraman began his medical studies at Karadeniz Technical University Faculty of Medicine in 1989 and earned his Medical Doctor degree in 1995. Following two years as a general practitioner, he embarked on his specialization training in 1997. He completed his residency at Ankara Oncology Training and Research Hospital, becoming a General Surgery Specialist in 2002.
Dr. Kahraman worked as a General Surgery Specialist in public hospitals, including Trabzon Numune Hospital and Bakırköy Dr. Sadi Konuk Training and Research Hospital, for 13 years. From 2016 to 2018, he served as a Lecturer at University of Health Sciences. In 2019, he transitioned to the private sector, continuing his career in private hospitals.
Throughout his career, Dr. Kahraman has engaged in a wide range of training programs both in Turkey and abroad. In 2007, he earned a Surgical Endoscopy Certificate and furthered his expertise in laparoscopic hernia treatments in Hamburg, Germany, in 2008. He also completed a course on Nutrition Practices and Training at Ondokuz Mayis University and a specialized course in laparoscopic hernia repair in Istanbul in 2010.
In 2011, after completing the "Emergency Surgery" course in Istanbul organized by the European Society for Trauma and Emergency Surgery (ESTES), Dr. Kahraman received training in SILS (Single Incision Laparoscopic Surgery) Cholecystectomy at Gazi University in Ankara. Since then, he has specialized in advanced laparoscopic techniques, with a particular focus on endoscopy, gastric diseases, obesity, and metabolic surgery.
In 2021, Dr. Kahraman obtained certificates in Ozone Therapy and Mesotherapy from Medipol University.
Since 2023, he has been serving at Estexper Clinic, Istanbul.
2023 – Istanbul Gaziosmanpaşa Taksim Education and Research Hospital – General Surgery Clinic Associate Professor
2013 – Istanbul Gaziosmanpaşa Taksim Education and Research Hospital – General Surgery Clinic Specialist
2008 – 2013 Private Medical Park Fatih Hospital, General Surgery Specialist - Deputy Chief Physician
2005 – 2007 Private Gelişim Hospital – General Surgery Specialist
2003 – 2005 Private Istanbul Şafak Hospital – General Surgery Specialist - Chief Physician
2002 – 2003 ISTANBUL HASEKİ EDUCATION AND RESEARCH HOSPITAL – General Surgery Clinic Assistant Physician
1998 – 2002 Ankara Education and Research Hospital – General Surgery Clinic Assistant Physician
1998 – Health Sciences University – Istanbul Haseki Health Application and Research Center – Medical Specialization
1991 – Gazi University Faculty of Medicine – Bachelor’s Degree
Certificates
IGM Diagnosis, Treatment Workshop, Granulomatous Mastitis, Kocaeli, Certificate, 07.10.2023 (National)
ibreast 51- Free Flap Reconstruction, Breast Cancer Surgery, Online, Certificate, 30.09.2023 – 30.09.2023 (International)
ibreast 50- Triple Negative Breast Cancer, Breast Cancer, Online, Certificate, 02.09.2023 -02.09.2023 (International)
ibreast 49- Implant Based Reconstruction, Breast Cancer, Online, Certificate, 12.08.2023 -12.08.2023 (International)
ibreast 48- DCIS, İbreast 48- DCIS, Online, Certificate, 15.07.2023 -15.07.2023 (International)
ibreast 47- Conference Updates, Breast Cancer, Online, Certificate, 25.06.2023 -25.06.2023 (International)
ibreast 46- Margin Revisited, Breast Cancer, Online, Certificate, 10.06.2023 -10.06.2023 (International)
1. International 4. National Breast Surgery Congress, Breast Surgery, Ürgüp, Certificate, 05.05.2023 – 07.05.2023 (International)
ibreast 44- HER2 Positive Disease, Breast Cancer, Online, Certificate, 29.04.2023 -29.04.2023 (International)
St-Gallen 2023, St-Gallen Congress Summary Meeting, Istanbul, Certificate, 01.04.2023 -01.04.2023 (National)
ibreast 43- Save The Nipple, Breast Cancer, Online, Certificate, 25.03.2023 -25.03.2023 (International)
ibreast 42-Chest Wall Perforator Flap Revisited, Breast Cancer, Online, Certificate, 25.02.2023 -25.02.2023 (International)
ibreast 41- High Risk And B3 Lesions, Breast Diseases, Online, Certificate, 28.01.2023 -28.01.2023 (International)
15. New Approaches in Breast Cancer Education Meeting, Breast Cancer, Istanbul, Certificate, 07.01.2023 – 08.01.2023 (National)
Articles she wrote and took part in;
1.YILDIRIM EMİNE, BEKTAŞ SİBEL, YETİŞ FIRAT, YILDIZ EREN OZAN, ÖZDEMİR MUHAMMED, KOMUT NESLİHAN, ÇALIK MUSTAFA, ER AHMET MUZAFFER. Correlation between breast and axillary pathologic complete response after neoadjuvant chemotherapy in breast cancer. Annali Italiani di Chirurgia, 2023
2.UZUN NEDİM, YILDIRIM EMİNE. Relationship Between Toilet Type and Hemorrhoids. Bezmialem Vakif University, 2022
3.YILDIZ EREN OZAN, YILDIRIM EMİNE, ORHUN ERDOĞAN KIVILCIM, ERYILMAZ İKLİL, YÜNLÜEL EMİR MEHMET, YETİŞ FIRAT, ULUKENT SUAT CAN. The effect of the covid 19 pandemic on the number of patients treated for acute and complex acute appendicitis. Annali Italiani di Chirurgia, 2202
4.YILDIRIM EMİNE, BEKTAŞ SİBEL, ÖZDEMİR MUHAMMED, KARAGÜLLE AHENK, ER AHMET MUZAFFER, UÇAR NEŞE. Upgrade Rates of DCIS, Intraductal Papilloma, and the Other High-risk Breast Lesions. Hamidiye Medical Journal, 2022
5.ÖZKAN GÜMÜŞKAYA PERİHAN, ALTUN ÖZGÜR, KARAKÜTÜK YÜZTAŞ NUR, ÖZSOY NESLİHAN, AYDIN TUTAK GÜLTEN, YILDIRIM EMİNE, ADAŞ MİNE, KÜÇÜK MEHMET. COVID-19 Pnömonisi Sonrası AntiHBs Değerlerindeki Değişiklikler. Journal of Contemporary Medicine, 2022;12(4),
6.KOMUT NESLİHAN, BEKTAŞ SİBEL, YILDIRIM EMİNE. The relationship of tumor budding with GOLPH3 expression and histopathological prognostic parameters in colorectal adenocarcinoma. Annals of Diagnostic Pathology 2022 Jun;58:151933.
7.KAYADİBİ YASEMİN, UÇAR NEŞE, AKAN YEŞİM NAMDAR, KAYA MEHMET FATİH, YILDIRIM EMİNE, ALADAĞ KURT SEDA, SOYLU BOY FATMA NUR, TAŞKIN FÜSUN, İÇTEN GÜL ESEN. Magnetic resonance imaging findings associated with recurrence in idiopathic granulomatous mastitis. Clinical Imaging, 2022
8.YILDIRIM EMİNE, KEĞİN MURAT, ÖZDEMİR MUHAMMED, BEKTAŞ SİBEL, PELEN ZEKERİYA, ER AHMET MUZAFFER. Neoplasms of theAppendix; Single Institution and Ten-Year Experiences Results. Turkish Journal of Trauma and Emergency Surgery, 2022;28(3), 352-360
9.YILDIRIM EMİNE, YILDIZ EREN OZAN, ERYILMAZ İKLİL, ER AHMET MUZAFFER, BEKTAŞ SİBEL. Comparison of excised breast volume, re-excision rate and margin positivity in breast-conserving surgery in breast cancer patients using and not using neoadjuvant chemotherapy. Journal of Surgery in Medicine,2022;6
10.YILDIRIM EMİNE, BEKTAŞ SİBEL, PELEN ZEKERİYA, YANIK İREM, ER AHMET MUZAFFER, ÇENGEL FERHAT, ÖZKAN GÜMÜŞKAYA PERİHAN. Histopathological, Radiological, and Demographic Factors Predicting the Response to Neoadjuvant Therapy for Rectal Cancer. Journal of Gastrointestinal Cancer, 2022;53(1)
11.KAYADİBİ YASEMİN, KOÇAK BURAK, UÇAR NEŞE, AKAN YEŞİM NAMDAR, YILDIRIM EMİNE, BEKTAŞ SİBEL. MRI Radiomics of Breast Cancer: Machine Learning-Based Prediction of Lymphovascular Invasion Status. Academic Radiology, 2022;29(1), 126-134.
12.YILDIRIM EMİNE, UÇAR NEŞE, YETİŞ FIRAT, KAYADİBİ YASEMİN, BEKTAŞ SİBEL. Diagnostic performance of breast imaging with ultrasonography, magnetic resonance and mammography in the assessment of residual tumor after neoadjuvant chemotherapy in breast cancer patients. Journal of Surgery and Medicine, 2022;6(1), 43-48
13.YILDIRIM EMİNE, BEKTAŞ SİBEL, GÖKTAŞ AYDIN SABİN, ER AHMET MUZAFFER, YANIK İREM, ÖZKAN GÜMÜŞKAYA PERİHAN, YILMAZ BARBAROS UTKU, BİLİCİ AHMET, ÖNCEL MUSTAFA. Factors Predicting Response to Neoadjuvant Chemotherapy in Locally Advanced Gastric Cancer. Journal of Istanbul Faculty of Medicine / İstanbul Tıp Fakültesi Dergisi, 2022;85(1), 41-50.
14.YILDIRIM EMİNE, Pelen Zekeriya, KEĞİN MURAT, UÇAR NEŞE, KAYADİBİ YASEMİN, GÜNDOĞAR ÖZGECAN. Evaluation of the Reliability of Preoperative Ultrasonography and Ultrasonography-Guided Fine Needle Aspiration Biopsy in Axillary Staging in Patients With Breast Cancer. Journal of Academic Research in Medicine, 2021;11(3), 269-276.,
15. KAYADİBİ YASEMİN, UÇAR NEŞE, KAYA MEHMET FATİH, YILDIRIM EMİNE, BEKTAŞ SİBEL. Characterization of Suspicious Microcalcifications on Mammography Using 2D Shear-Wave Elastography. Ultrasound in Medicine & Biology, 2022;47(9), 2532-2542.
16.KAYADİBİ YASEMİN, TEKCAN ŞANLI DENİZ ESİN, UÇAR NEŞE, YILDIRIM EMİNE, ŞANLI AHMET NECATİ. Evaluation of the Appearance Characteristics of Suspicious Microcalcifications Detected by Ultrasonography. Journal of Academic Research in Medicine, 2022;11(2), 199-205.
17.YILDIRIM EMİNE, ÖZER HİLAL, ÖZER İLTER, KOYUNCU ADİL, YILDIRIM TİMUR. The Effects on Bacterial Translocation and Tissue Damage of Selenium Treatment in an Experimental Intestinal Ischaemia-Reperfusion Model. Turkish Journal of Trauma and Emergency Surgery, 2021;27(4), 389-394.
18.YILDIRIM EMİNE, AKBAŞ PELİN, ORHUN ERDOĞAN KIVILCIM, BEKTAŞ SİBEL, ÖZKAN GÜMÜŞKAYA PERİHAN, ER AHMET MUZAFFER, PALTURA CEKİ. The comparison of the histopathological results of the thyroid fine-needle aspiration biopsies in the 795 patients with thyroidectomy. Diagnostic Cytopathology, 2021
Experience:
2022 -
Medipol Bahçelievler
2021 - 2022
MEDIPOL UNIVERSITY SEFAKÖY HOSPITAL
2018 - 2020
İSTİNYE UNIVERSITY FACULTY OF MEDICINE
2014 - 2020
TOKAT STATE HOSPITAL
2010 - 2010
BINGOL STATE HOSPITAL
Education:
2021
MEDIPOL UNIVERSITY, GASTROTEROLOGY
2018
İSTINYE UNIVERSITY, INTERNAL DISEASES USA
2014
ANKARA TRAINING AND RESEARCH HOSPITAL, GASTROENTEROLOGY
2010
FIRAT UNIVERSITY, FACULTY OF MEDICINE/INTERNAL MEDICAL SCIENCES DEPARTMENT/INTERNAL MEDICINE DEPARTMENT
2004
FIRAT UNIVERSITY, FACULTY OF MEDICINE
A. International Peer-Reviewed Journal Articles:
Title: Fatal fulminant hepatitis B after withdrawal of entecavir treatment in a patient with HBeAg seroconversion.
Title: Acute gastric obstruction resulting from gallstone-induced bezoar.
Title: Garlic-induced esophagitis.
Title: Association between Helicobacter pylori and liver-to-spleen ratio.
Title: Crohn's disease masked by median arcuate ligament syndrome.
Title: Telaprevir and anemia: What we learned from the first three patients.
Title: Magnesium and parathyroid hormone levels of patients using different proton pump inhibitors.
Title: Is topical pharyngeal anesthesia necessary in esophagogastroduodenoscopy in all unsedated patients?
Title: Inpatient Care Of Hepatitis C: Applying The Four Pillars Model To The Hospital Setting.
Title: "The "Bouveret's Syndrome" Case Resolved Without Necrotic Changes."
Title: Severe acute pancreatitis due to hypertriglyceridemia.
Title: Gallstone Ileus Caused by Cholecystoenteric Fistula Demonstrated on Computed Tomography.
Title: Intestinal Perforation Due to Ingested Chicken Bone Mimicking Crohn's Disease.
Title: Acute pancreatitis induced by hypertriglyceridemia: A case-based review.
Title: An Unusual Complication of Endoscopic Retrograde Cholangiopancreatography: Severe Acute Pancreatitis Leading to Death.
Title: A Rare Cause of Abdominal Pain: Mesenteric Panniculitis.
B. Contributions to Scientific Conferences:
Title: Suicidal poisonings in Turkey: demographic and clinical aspects.
Title: A Rare Cause of Gastrointestinal Bleeding: Aortoenteric Fistula.
Gastroenterologist
• Surgical treatment: laparoscopic operations to remove all types of hernias (inguinal hernias, femoral hernias, umbilical hernias, postoperative ventral hernias, esophageal opening of the diaphragm and other types of abdominal wall hernias).
• Treatment of gallstone disease, removal of the gallbladder (cholecystectomy), stones in the ducts.
• Operative treatment for acute conditions (acute appendicitis, acute cholecystitis, perforating ulcer, perforation of a diverticulum, intestinal obstruction, purulent-septic diseases), all conditions of "acute abdomen".
• Treatment of oncological diseases of the stomach, intestines and other organs of the abdominal cavity and retroperitoneal space.
• Treatment of varicose veins of the legs.
• Operative treatment of obesity (bariatric surgery) and metabolic dysfunction.
• Colitis, hemorrhoids, anal itching, fissures, constipation and diarrhea, anal sphincter weakness, anal sphincter incontinence due to rupture of the perineum after childbirth.
• Abdominal injuries.
• Perianal condylomas.
• Polypos.
• Proctitis, paraproctitis and others.
Professor Prager is an outstanding surgeon in the field of bariatrics and is involved in research, education, and advanced training. He is Chairman of the Scientific Advisory Board for Bariatric Surgery at IFSO, and has performed more than 3,000 bariatric operations using various methods. He has a professional network of endocrinologists, psychologists, therapists, nutritionists, sports therapists, pediatricians and teenage psychologists to provide comprehensive treatment for his patients.