Best Colonoscopy Doctors Abroad

Prof. Boursi developed predictive models for early colorectal cancer diagnosis. He handles gastrointestinal oncology and colonoscopy screenings at Sheba Medical Center.

• Trained in oncology at MD Anderson Cancer Center and Mayo Clinic
• Completed a gastrointestinal oncology fellowship at the University of Pennsylvania
• Founded the ECOG-ACRIN Microbiome Working Group to study cancer development
• Member of the Israeli Association of Clinical Oncology and Radiotherapy
• Published research in Science journal regarding cancer treatment response

Dr. Shute Ailia DAE is a medical oncologist at Optimed International Çorlu Hospital. Dr. Ailia graduated from Dokuz Eylül University Faculty of Medicine in 2013 and completed an internal medicine residency at Bezmialem Vakıf University Hospital in 2018. A hematology–oncology fellowship at Başkent University Hospital followed in 2023.

From 2018 to 2020, Dr. Ailia served as an internal medicine specialist at Bezmialem Vakıf University Hospital. From 2023 to 2024, Dr. Ailia was an instructor in medical oncology at Başkent University Adana Dr. Turgut Noyan Practice and Research Center.

Clinical focus includes breast, lung, and prostate cancers. It also covers gastrointestinal cancers (colon, stomach, esophagus, pancreas, liver), lymphomas, melanoma, and gynecologic and genitourinary cancers. Languages: English, Turkish, Swahili.

Dr. Premkamol Patraithikul is a general surgeon with advanced training in minimally invasive techniques. Dr. Patraithikul earned an M.D. from Khon Kaen University. Dr. Patraithikul completed a residency in general surgery at Thammasat University. Dr. Patraithikul completed a fellowship in laparoscopic surgery at Mahidol University (Siriraj Hospital) in Thailand.

Clinical expertise includes laparoscopic and robotic surgery. Practice also covers general surgery, obesity and weight‑management surgery, and surgery for gastrointestinal conditions.

Zhang Jinshan, male, China’s First M.D. in the Radiation Medicine, CCI (Chinese College of Interventionalists) Master Interventionalist, Director of the Department of Former Radiological Diagnosis at Chinese PLA General Hospital(No.3 in China) Ph.D. of Medicine, Nagasaki University, Japan.

1980–1985: Completed doctoral studies at Nagasaki University, Japan

1968–present: Department of Radiology, Chinese PLA General Hospital

1988: Third Prize of the Military Science and Technology Progress Award

1989–present: Member of Radiological Society of North America(RSNA)

1990–2009: Standing Committee Member of the Radiology and Therapeutic Radiology Committee of the PLA

1991: Second Prize of the Military Science and Technology Progress Award

1992–2008: Group Leader of the Group of Intervention of Chinese Journal of Radiology

1992–2015: Standing Editorial Board Member and Editorial Board Member of Journal of Interventional Radiology

1993: Granted the Lifetime Special Government Allowance of the State Council

1993–2012: Deputy Chief Editor of Chinese Journal of Medical Image Technology

1994: Third Prize of the Military Science and Technology Progress Award

1997: Second Prize of the Military Science and Technology Progress Award

1997–2009: Standing Member of Chinese Society of Radiology

1999: Third Prize of the Military Science and Technology Progress Award

1999–2010: Deputy Director Member of Chinese Society of Interventional Oncology

2002: Second Prize of the Military Science and Technology Progress Award

2005: Third Prize of the Military Science and Technology Progress Award

Member of Radiological Society of North America(RSNA)

Standing Member of Chinese Society of Radiology

Group Leader of the Group of Intervention of Chinese Journal of Radiology

Deputy Director Member of Chinese Society of Interventional Oncology

Director Member of Beijing Medical Association Society of Interventional Radiology

Deputy Chief Editor of Chinese Journal of Medical Image Technology

Standing Member of Professional Committee of Radiological Medicine of the Chinese People’s Liberation Army

Standing Editorial Board Member and Editorial Board Member of Journal of Interventional Radiology

Awarded the Special Government Allowance of the State Council

Awarded three Second Prizes and four Third Prizes for Military Science and Technology Progress.

Awarded the honorary title of “Chinese College of Interventionalists(CCI) Master Interventionalist”

Led multiple national and provincial/ministerial scientific research projects, including two projects funded by the National Natural Science Foundation of China and two projects funded by the Department of Science and Technology of Sichuan Province.

In the pioneering development of interventional medicine in China, Zhang Jinshan has been an indispensable founder and leading figure. As China’s first overseas-trained doctoral graduate in radiological medicine, he returned to China in the 1980s after completing his studies abroad and introduced cutting-edge international interventional technologies to the country. Over more than four decades of dedicated practice and research, he has helped propel Chinese interventional medicine from its infancy to a position at the forefront of the global field through his exceptional clinical expertise and profound academic accomplishments.

Professor Zhang Jinshan has long been dedicated to the field of medical imaging and has developed distinctive expertise in selective and superselective interventional diagnosis and treatment for solid tumors such as liver cancer, demonstrating exceptional technical proficiency and profound academic accomplishment. Beginning in the 1990s, he led his team in pioneering the clinical application and research of TIPSS and B-ORTO in China, filling major gaps in the domestic field and opening new paths for the interventional management of gastrointestinal bleeding caused by portal hypertension secondary to liver cirrhosis. In addition, he has made groundbreaking contributions to the interventional diagnosis and treatment of peripheral vascular diseases, as well as to preoperative embolization for spinal tumors.

In the field of liver cancer treatment, Professor Zhang Jinshan not only led the development of standardized treatment protocols for liver cancer but also pioneered Transcatheter Arterial Chemoembolization with temporary Hepatic Vein Thrombosis (TACE-THVO) for primary liver cancer, bringing the efficacy of interventional therapy to a new level. In recognition of his outstanding clinical and scientific contributions, he was awarded the honorary title of “Chinese Master of Interventional Radiology” at the 2019 annual conference of the Chinese College of Interventionalists.

Professor Zhang Jinshan is not only a master clinician but also a driving force in the development of the discipline and a dedicated mentor in talent cultivation. He led his team in establishing one of China’s premier interventional therapy centers. As a doctoral supervisor, he has trained a large number of outstanding specialists and future leaders in interventional medicine, with many of his students and protégés now serving across the country. Academically, he has led multiple key national and military research projects, published more than 300 academic papers, and served as chief editor of three monographs, making remarkable contributions to the establishment of China’s academic framework for interventional medicine and the nationwide dissemination of its technologies.

From the laboratory to the operating room, and from academic podiums to grassroots hospitals, Professor Zhang Jinshan has consistently upheld the principles of “pioneering, innovation, pragmatism, and compassion". He has devoted his life to fulfilling the mission of a physician—relieving patients’ suffering through minimally invasive techniques and advancing the discipline through academic excellence—thereby establishing himself as a truly towering figure and one of the foremost authorities in the field of interventional medicine in China.

Professor Zhang Jinshan’s Academic Achievements

Professor Zhang Jinshan has achieved prolific academic accomplishments, having published over 300 academic papers covering areas such as interventional therapy for liver cancer, minimally invasive treatment of portal hypertension, interventional treatment of vascular diseases, and tumor ablation.

Selected Publications by Professor Zhang Jinshan

1. Zhang Jinshan, Wang Maoqiang. Experiments and Clinical Studies of transjugular intrahepatic portosystemic stent shunt (TIPSS). Chinese Journal of Radiology, 1993，27（6）：361-365.

Professor Zhang Jinshan is the first author. This is one of the early research papers in China that systematically elaborates on the TIPSS technique. Through animal experiments and clinical case analysis, it confirmed that TIPSS is a safe and effective minimally invasive method for treating portal hypertension and its complications, laying an important foundation for the promotion and application of this technique in China.

2.Zhang Jinshan, Li Huai. Clinical study on transcatheter arterial embolization with temporary hepatic vein occlusion for the treatment of primary liver cancer.Chinese Journal of Radiology, 1996，30（8）：521-524.

Professor Zhang Jinshan is the first author. He innovatively proposed the technique of "transcatheter arterial embolization with temporary hepatic vein occlusion." Clinical results demonstrated that this method can significantly increase the drug concentration within liver cancer lesions, reduce damage to normal liver tissue, and effectively improve the therapeutic outcomes for intermediate and advanced liver cancer, providing a novel strategy for the interventional treatment of liver cancer.

3. Zhang Jinshan, Wang Maoqiang, Li Huai. Interventional treatment of Budd-Chiari syndrome. Chinese Journal of Medical Imaging Technology, 1998，14（3）：189-191.

Professor Zhang Jinshan is the first author. This paper systematically summarizes the early experience in interventional treatment of Budd-Chiari syndrome in China, elaborating in detail on the key operational points and therapeutic efficacy of techniques such as percutaneous transluminal angioplasty and stent placement. It confirms that interventional therapy is the preferred minimally invasive method for Budd-Chiari syndrome, promoting the standardized development of treatment for this disease.

4.Zhang Jinshan, Li Huai, Wang Maoqiang. Clinical value of superselective hepatic arterial chemoembolization in the treatment of hypovascular liver cancer. Chinese Journal of Radiology, 2000，34（5）：335-337.

Professor Zhang Jinshan is the first author. Addressing the challenges in interventional treatment of hypovascular liver cancer, this paper explores the clinical efficacy of superselective hepatic arterial chemoembolization. The results indicate that this technique can precisely target the lesions and improve the treatment response rate, providing an important clinical basis for the interventional treatment of hypovascular liver cancer.

5. Zhang Jinshan, Li Huai, Wang Maoqiang. Interventional treatment of peripheral vascular stenosis and occlusion.Chinese Journal of Radiology, 2002，36（7）：612-614.

Professor Zhang Jinshan is the first author. This paper summarizes the interventional treatment experience of over 400 patients with peripheral vascular stenosis and occlusion, analyzing the indications and efficacy of techniques such as balloon angioplasty and stent placement. It confirms that interventional therapy is a safe and effective approach for peripheral vascular diseases, providing practical support for its clinical promotion.

6.Zhang Jinshan, Li Huai, Wang Maoqiang. Clinical application of CT-guided percutaneous puncture ablation in the treatment of abdominal tumors. Chinese Journal of Medical Imaging Technology, 2004，20（9）：1395-1397.

Professor Zhang Jinshan is the first author. This paper explores the application value of CT-guided percutaneous puncture techniques such as radiofrequency ablation and chemical ablation in the treatment of abdominal tumors. The clinical results show that this method is minimally invasive with reliable efficacy, offering a minimally invasive treatment option for patients with inoperable abdominal tumors.

7.Zhang Jinshan, Wang Maoqiang, Li Huai. Advances in the application of interventional therapy for benign prostatic hyperplasia. Chinese Journal of Radiology, 2006，40（8）：876-878.

Professor Zhang Jinshan is the corresponding author. This paper systematically reviews the cutting-edge advances in interventional therapy for benign prostatic hyperplasia, including the principles, procedures, and efficacy of techniques such as prostatic artery embolization and stent placement, providing new insights for the minimally invasive treatment of benign prostatic hyperplasia.

8.Zhang Jinshan, Li Huai, Wang Maoqiang. Discussion on the standardization of interventional therapy for liver cancer. Chinese Journal of Practical Surgery, 2008，28（10）：856-858.

Professor Zhang Jinshan is the corresponding author. Drawing on years of clinical experience and research findings, he led the discussion on standardized protocols for interventional therapy of liver cancer, covering key aspects such as preoperative assessment, treatment modality selection, and postoperative management, providing important references for the formulation of clinical guidelines for interventional therapy of liver cancer in China.

Professor Zhang Jinshan co-authored monographs

1. Interventional Radiology (People's Military Medical Press, 1995): The first monograph in China to systematically discuss the theories and techniques of interventional radiology. It comprehensively elaborates on the interventional diagnosis and treatment system for tumors, vascular diseases, and non-vascular diseases, becoming a classic essential textbook for interventional physicians in China.

2.Interventional Therapy for Liver Cancer (People's Health Press, 2001): Focusing on minimally invasive interventions for liver cancer, this book systematically summarizes techniques such as TACE, ablation, and vascular intervention, refines operational standards and the prevention and management of complications, and promotes the standardization of interventional therapy for liver cancer.

3.Interventional Treatment of Portal Hypertension (Science Press, 2005): This book systematically elaborates on minimally invasive techniques for portal hypertension, such as TIPSS and B-ORTO, covering experimental research, clinical procedures, long-term follow-up, and efficacy evaluation, filling the gap in monographs on interventional treatment of portal hypertension in China.

Professor Zhang Jinshan’s Research project

1.The National "Eighth Five-Year Plan" Scientific and Technological Key Project—Clinical and Basic Research on Comprehensive Interventional Therapy for Liver Cancer (Project Leader): This project systematically explored multimodal interventional strategies for liver cancer, established the core regimen of superselective TACE combined with local ablation, and significantly improved the therapeutic outcomes for intermediate and advanced liver cancer.

2.The Military "Ninth Five-Year Plan" Key Medical Scientific Research Project—Standardized Research on TIPSS for the Treatment of Portal Hypertension (Project Leader): This project formulated China's first operational standards and postoperative management guidelines for TIPSS, reduced the incidence of complications, and promoted the popularization of this technique throughout the military and across the country.

3.National Natural Science Foundation of China Project — Research on the Mechanism of Targeted Therapy for Liver Cancer Using Hepatic Vein Occlusion Combined with Chemoembolization (Project Leader): This project revealed the synergistic enhancement mechanisms of the innovative technique at the levels of hemodynamics, drug metabolism, and the tumor microenvironment, providing theoretical support for precision interventional therapy of liver cancer.

4.Military Clinical High-Tech Major Project-Establishment and Clinical Application of the Interventional Treatment Technology System for Complex Vascular Diseases (Project Leader): This project overcame interventional challenges in complex lesions such as Budd-Chiari syndrome, peripheral vascular occlusion, and vascular malformations, forming a complete technical system that has been promoted and applied widely.

Dr. Kim Taegyun is a gastroenterologist. He focuses on pancreatobiliary diseases and cancers, including pancreatitis, pancreatic cysts and cancer, cholecystitis, gallstones (cholelithiasis), and biliary tract cancer. He also performs advanced endoscopy, including ERCP. He treats gastrointestinal tumors, stomach and colon polyps, stomach cancer, and submucosal tumors (SMT).

Education and training: MD, Jeonbuk National University College of Medicine. MS in Medicine, University of Ulsan. Internship, Jeonbuk National University Hospital. Residency in Internal Medicine, Veterans Health Service Medical Center. Fellowships in Gastroenterology, Inje University Haeundae Paik Hospital and Asan Medical Center.

Career: Attending physician and specialist at Gwangju Veterans Hospital and the Veterans Health Service Medical Center.

Dr. Pak Seongjin is a gastroenterologist. He focuses on endoscopy and advanced procedures such as gastroscopy, colonoscopy, polypectomy, and ESD. He also treats digestive and liver diseases, including cirrhosis, pancreatitis, hepatitis, and Helicobacter pylori infection.

He earned his M.D. and M.S. in Internal Medicine from Chung-Ang University. He completed his internal medicine residency and a gastroenterology fellowship at Chung-Ang University Hospital.

He is a clinical professor at Gachon University College of Medicine and Inha University College of Medicine. He is a full member of the Korean Association of Internal Medicine, the Korean Society of Gastrointestinal Endoscopy, the Korean Gastroenterology Association, and the Korean Pancreatobiliary Association.

Dr. Song Hwayeong is a gastroenterologist. Areas of focus include gastrointestinal cancers (stomach and esophageal) and advanced endoscopy (gastroscopy, colonoscopy, ESD, and polypectomy). Dr. Song also treats digestive and liver diseases, including GERD, gastritis, hepatitis, H. pylori infection, and liver disease.

Dr. Song completed a fellowship in Gastroenterology at Inje University Ilsan Paik Hospital. Dr. Song has served as Clinical Professor at Inje, Gachon, and Inha University Colleges of Medicine. Dr. Song is Director of the Gastroenterology Center at Naeun Hospital.

Accreditations: full member of the Korean Association of Internal Medicine, the Korean Society of Gastrointestinal Endoscopy, and the Korean Gastroenterology Association. Doping Committee Member, WKBL.

Selected papers: cryptogenic hepatocellular carcinoma; primary biliary cirrhosis with overlap syndromes; therapy for lamivudine-resistant chronic hepatitis B; and clevudine in HBV-related cirrhosis.

Dr. Park Sundo is a specialist in gastrointestinal and general surgery at Naeun Hospital. His expertise includes colorectal, proctology, breast, thyroid, laparoscopic, biliary, pancreatic, and pediatric surgery.

Key treatments include proctologic surgery, such as hemorrhoidectomy and care for hemorrhoids and anal fistula. He performs laparoscopic surgery for gallstones (cholelithiasis) and appendicitis. His oncology care covers gastric and colorectal cancer. He also performs hernia repair. Breast and thyroid care includes treatment of tumors and Mammotome biopsy. He treats varicose veins and severe burns. Pediatric surgery includes hernia repair and general pediatric procedures.

The doctor is an experienced specialist in interventional radiology, with a dedicated clinical focus on thyroid and prostate imaging and interventions. With a strong academic foundation from Istanbul University Cerrahpaşa Faculty of Medicine and specialized residency training in radiology at S.B. Haydarpaşa Numune Training and Research Hospital, the doctor brings extensive expertise to the field.

Throughout a distinguished career, the doctor has contributed to clinical practice at institutions including Başkent University Istanbul Hospital and S.B. Haydarpaşa Numune Training and Research Hospital. Additionally, the doctor holds a background in healthcare management from Anadolu University and maintains active professional memberships with the Istanbul Medical Chamber and the Istanbul Radiology Society.

Dr. Nurana Guliyeva is a gastroenterologist at the Biological Medicine Integrative Health Center in Baku. She specializes in treating viral hepatitis, cirrhosis, and complex autoimmune liver diseases. Dr. Guliyeva completed an internship in microbiology and infectious diseases at Ege University in Turkey. She focuses on digestive health, including stomach, intestine, and pancreas disorders.

• Trained at Ege University and Hacettepe Hospital in Turkey.
• Treats viral hepatitis A, B, C, and D alongside drug-induced liver poisoning.
• Performs specialized procedures like colon hydrotherapy and gastric polyp removal.
• Works at an integrative health center treating over 84,000 patients annually.

The doctor is a highly specialized surgeon with extensive expertise in oncological and metabolic procedures. The clinical focus encompasses a wide range of cancer surgeries, including complex interventions for pancreatic, bile duct, gastric, colon, and thyroid malignancies, as well as specialized breast surgery.

In addition to oncology, the doctor is proficient in bariatric and metabolic surgery, providing advanced surgical solutions for obesity and diabetes management. The practice is dedicated to delivering comprehensive surgical care, utilizing evidence-based techniques to address both malignant conditions and metabolic health disorders.

Professor Gerhard Prager leads the obesity clinic at Vienna General Hospital. He uses colonoscopy to evaluate digestive health in metabolic patients.

• Head of the Metabolic Surgery Center at Confraternitaet Private Hospital
• Specialist in gastroenterology and surgery for obesity and diabetes
• President of the European Chapter of the International Federation for the Surgery of Obesity
• Member of the American Society for Metabolic and Bariatric Surgery
• Expert in assesssing gastric ulcers and internal conditions

Dr. Arnulf Ferlitsch heads the internal medicine department. He is a multi-award-winning gastroenterologist who provides expert diagnostic colonoscopy services at Döbling Private Hospital.

• Six-time winner of the Best Abstract Award from United European Gastroenterology Week
• Nominated as a national Rising Star in Gastroenterology in 2012
• Specializes in treating complex inflammatory conditions like Crohn's disease and ulcerative colitis
• Completed clinical training at the University of Pennsylvania and UCLA
• Founded the hepatic hemodynamics laboratory at the Medical University of Vienna

Professor Schoppmann heads the Gastroesophageal Tumor Unit at Vienna General Hospital. He specializes in detecting and treating gastrointestinal polyps during a colonoscopy.

• Heads the Department for Surgical Functional Testing at the Medical University of Vienna
• Published 240+ scientific articles on digestive tract diseases and cancer research
• Serves as General Secretary of the Austrian Society of Surgical Oncology
• Section Editor for the medical journal European Surgery
• Expert in visceral surgery focusing on complex upper digestive system conditions

Dr. Tülin Kendir Koçak is a gastroenterology specialist at Emsey Hospital. She uses advanced screening techniques like colonoscopy to examine the large intestine and rectum.

• Performs chromoendoscopy – uses specialized dyes to better visualize and find abnormal tissues
• Specializes in interventional treatments – including the removal of polyps and foreign bodies
• Internal medicine and gastroenterology specialist trained at major Turkish training and research hospitals
• Treats complex digestive conditions – including Crohn’s disease, cirrhosis, and gastrointestinal bleeding

Dr. Zulfu Sertkaya is an associate professor and andrologist at Andro Expertise in Istanbul. He holds the FEBU title from the European Association of Urology. Dr. Sertkaya focuses on male health, sexual function, and aesthetic urological procedures. He treats patients at his clinic and performs surgeries at affiliated hospitals.

• Earned Fellow of the European Board of Urology (FEBU) status.
• Specialize in andrology, male sexual health, and aesthetic urology.
• Performs penile implant surgery and varicocelectomy for infertility.
• Works at a clinic accredited by the Turkish Medical Association.

Dr. Brenda Pastrana is a surgical oncologist at the JCI-accredited Galenia Hospital in Cancún. She specializes in breast, thyroid, and digestive system cancers. Dr. Pastrana is board-certified by CONACEM. She holds a medical degree from the Universidad Autónoma de México.

• Performs mastectomies, liver resections, and complex colon cancer surgeries.
• Treats patients at a facility holding Accreditation Canada Diamond Status.
• Serves as a university teacher at Universidad Anáhuac.
• Member of the Mexican Society of Oncology (SMEO).