Best Comprehensive diagnosis of Сolorectal Pathology Doctors Worldwide — TOP 91

Dr. Tarik Akar specializes in gastrointestinal oncology at Hisar Hospital Intercontinental. He uses advanced endosurgical techniques for precise colorectal diagnostic evaluations.

• Performs ESD – a technique to remove early-stage colon cancers during the procedure
• Winner of Best Verbal Presentation at the International Gastrointestinal System Cancers Congress
• Published over 25 papers on digestive system disorders and cancer treatments
• Conducts colonoscopy with biopsies for accurate diagnosis of polyps and inflammatory diseases
• Treats complex conditions like ulcerative colitis and Crohn's disease

Dr. Mustafa Solak completed specialized training at the MD Anderson Cancer Center. He leads oncology cases at Hisar Hospital Intercontinental for colorectal pathology diagnosis.

• Performed a fellowship at the prestigious Hacettepe University Cancer Institute
• Specializes in gastrointestinal malignancies including colon and stomach cancer
• Expert in systemic therapies such as targeted therapy and immunotherapy
• Trained at MD Anderson – a global leader in cancer research and care
• Member of the medical team at Hitit University Corum Training Hospital

Dr. Eda Tanrikulu ranks among the top oncologists in Turkey. She won 3rd place nationwide in the national medical specialty examination.

• Completed advanced colorectal cancer training at Oxford University in England
• Participated in a specialized colorectal cancer exchange program in Shanghai
• Former Head of Medical Oncology at Haydarpaşa Numune Training Hospital
• Focuses on matching therapies to the unique genetic profile of tumors
• Certified by the European Society of Medical Oncology (ESMO)

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.

Prof. Dr. Engin Tutar was born in Istanbul in 1964. He completed his primary and secondary education at Istanbul Erkek Lisesi between 1975 and 1982, and graduated from Istanbul University Istanbul Faculty of Medicine in 1988. In December of the same year, he started his specialization in the Department of Pediatrics at Dr. Lütfi Kırdar Kartal Training and Research Hospital, becoming a specialist in Pediatrics in February 1993. He completed his subspecialty training in Pediatric Gastroenterology, Hepatology, and Nutrition at Marmara University Faculty of Medicine, becoming a subspecialist in 2006. He served as the Assistant Chief Physician and Acting Chief Physician at the 2nd Pediatric Clinic of Dr. Lütfi Kırdar Kartal Training and Research Hospital between 2010 and 2012. In May 2012, he transferred to Marmara University Faculty of Medicine, where he became an Associate Professor in Pediatric Gastroenterology, Hepatology, and Nutrition in 2014, and a Professor in 2020. Alongside his international and national article authorships, he has given over 50 presentations at congresses/courses/association meetings. He retired in May 2024 while serving as the head of the Pediatric Gastroenterology, Hepatology, and Nutrition department at Marmara University Faculty of Medicine. As of June 2024, he is accepting patients at Hisar Hospital Intercontinental.

MEDICAL INTERESTS

• Healthy child monitoring
• Growth and nutritional disorders
• Approach to patients with abdominal pain
• Gastroesophageal reflux
• Chronic diarrhea and chronic constipation
• Celiac disease
• Inflammatory bowel disease
• H. pylori infection-related and unrelated gastritis and ulcers, patients with gastric bleeding
• Liver, gallbladder, and pancreas diseases
• Acute and chronic gastrointestinal infections
• Diagnostic upper and lower gastrointestinal endoscopy
• Therapeutic upper and lower gastrointestinal endoscopy (esophageal variceal bleeding, gastric and small bowel ulcer bleeding, polypectomy)
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Doctor Brenda Pastrana is a mexican surgical Oncologist. 

Medical background.

Centro Medico Nacional 20 de Noviembre Issste, Surgical Oncologist in 2020.

Title by Universidad Autónoma de México UNAM.

Surgical Residency Instituto Mexicano del Seguro Social. 2015.

Title by Universidad de Quintana Roo. 

Board Certified by Conacem from 2020 to 2025 number 2171 

Board Certified by Conacem from 2025 to 2030 number 2171

Member of SMEO. Sociedad Mexicana de Oncología. 

University teacher at Universidad Anahuac of Medicine since 2020.

Dr. Cemalettin Aydin is a professor of general surgery at Medipol Acibadem District Hospital in Istanbul. He specializes in gastroenterology surgery and complex weight loss procedures. He completed a prestigious fellowship in gastroenterology surgery at the Türkiye High Specialization Hospital.

• Performs advanced bariatric surgeries including gastric bypass and sleeve gastrectomy.
• Treats complex gastrointestinal conditions such as pancreatitis, Crohn's disease, and cirrhosis.
• Expert in endoscopic sleeve gastroplasty (ESG) and laparoscopic anti-reflux surgery.
• Works at Medipol Acibadem, a JCI-accredited facility using the da Vinci robotic system.

Dr. Carlos Garcia Vasquez is a specialist in digestive surgery. He serves as the Associate Head of General and Digestive System Surgery at Infanta Elena University Hospital.

• Holds a PhD in Surgery with a focus on high-risk intestinal healing
• Certified in robotic surgery using the Da Vinci X and Xi platforms
• Published research on colorectal cancer screenings and intestinal health in major journals
• Trained in gastrointestinal histopathology at the prestigious St. Marks Institute in London
• Current member of the Spanish Association of Coloproctology

Education and Academic Titles

• Hacettepe University Faculty of Medicine – Medical Degree, 1992
• Başkent University Faculty of Medicine – General Surgery Residency, 1995
• Ankara Numune Training and Research Hospital – General Surgery Residency, 2000
• Gaziantep University Faculty of Medicine – Assistant Professor of General Surgery, 2007
• Interuniversity Council – Associate Professorship, 2018
• Istanbul Aydın University – Professorship, 2023
• Second Bachelor’s Degree: Anadolu University – Public Administration, 2008
• Master’s Degree: Akdeniz University – Health Law, 2023

Prof. Amos Toren, MD, PhD, MHA, is a pediatric hemato-oncologist and BMT specialist. He served as Director of Pediatric Hemato-Oncology and BMT at Sheba Medical Center.

He is board certified in Pediatrics, Pediatric Hemato-Oncology, and Bone Marrow Transplantation. He holds a PhD in Human Genetics. He was Head of the Hematology Division at Tel Aviv University for two terms. He is a member of ASH, COG, ESPHI, EBMT, and CIBMTR. He also serves on the Ministry of Health Cord Blood Committee.

He led one of Israel’s most advanced pediatric oncology and BMT programs. The program treated children and young adults. His focus includes leukemia and lymphoma, immunodeficiencies, and rare cancers. He specializes in BMT and CAR T-cell therapy.

His translational research covers CAR T cells, cytokine-induced killer cells, pediatric brain tumors, and targeted therapies. He has worked with St. Anna, the NIH, and St. Jude. His publications include studies on pediatric SCT prophylaxis and PARP resistance.

Dr. Kittipanyaworakul is a specialist in gastroenterology and hepatology at Navamin 9 Hospital. He provides expert colorectal pathology diagnosis through his background in internal medicine.

• Holds a diploma in gastroenterology and hepatology from Mahidol University
• Trained at Ramathibodi Hospital – a top medical center in Thailand
• Earned a diploma in internal medicine from Chulalongkorn Memorial Hospital
• Expertise includes diagnosing disorders of the liver and digestive system

Dr. Andrej Orságh is a gastroenterologist, certified in 2015. He has worked at the Gastroenterology Department of the National Cancer Institute (NOÚ) since 2016. Since 2019 he has been the institute’s specialist consultant for colorectal cancer screening. He leads the colorectal cancer screening working group of the Slovak Gastroenterological Society. He is vice-chair of its Endoscopy Section and chair of its Oncology Section.

He graduated from Comenius University in 2009. He trained at the Gastroenterology Clinic of the University Hospital in Bratislava and at the Slovak Medical University. He shares his expertise at professional conferences and in publications. He also teaches basic and advanced endoscopic techniques in NOÚ courses.

Dr. Juraj Letkovsky has been a gastroenterologist at the Gastroenterology Department of the National Cancer Institute (NOÚ) since 2017. He graduated in medicine in 2012 and earned a PhD in internal medicine in 2016. He obtained specialization in gastroenterology in 2018.

His practice focuses on advanced endoscopic diagnosis and treatment of digestive tract tumors. He performs endosonography and ERCP for pancreatic and biliary diseases.

He serves on the Young Gastroenterologists, Endoscopy, and Oncology sections of the Slovak Gastroenterology Society. He is a co-author of an ongoing multicenter study on colonoscopy quality in Slovakia. He holds certificates in diagnostic and interventional esophagogastroduodenoscopy (2022) and endoscopic retrograde cholangiopancreatography (2023).

Dr. Boris Pekárek is a gastroenterologist. He graduated from the Faculty of Medicine, Comenius University in Bratislava in 2002. He worked at the Internal Medicine Clinic in Trnava from 2002 to April 2010. He obtained his specialization in gastroenterology in 2008.

Since April 2010, he has worked at the Gastroenterology Department of the National Cancer Institute. He has led the department since 2017. He completed several specialized training courses abroad. He focuses on endoscopic diagnosis and treatment of early tumors of the esophagus, stomach, colon, and rectum.

He served as chair of the Oncology Section of the Slovak Gastroenterological Society from 2018 to 2024. He is the current chair of its Endoscopy Section and a member of the Society’s committee. He publishes, lectures at conferences, and trains basic and advanced endoscopic techniques in Slovakia and abroad.

Dr. Daniela Osuská is a gastroenterologist. She graduated from the First Faculty of Medicine, Charles University, in 2010. From 2010 to 2019 she worked as a secondary physician at the Internal Medicine Clinic of Nitra University Hospital. There she began performing endoscopies. Since 2019 she has worked at the Gastroenterology Department of the National Cancer Institute. She earned her gastroenterology specialization in 2021.

She serves on the supervisory board of the Oncology Section of the Slovak Gastroenterological Society and the Section of Young Gastroenterologists. She publishes and presents her work in Slovakia and abroad. She also trains physicians in endoscopic techniques.

Education and Specialization

• Faculty of Medicine, Hacettepe University
• 1999 - Akdeniz University, Faculty of Internal Medicine, Internal Medicine Specialization Training
• Internal Medicine Specialization Training in the USA, Akdeniz University (2013 - 2014)
• Internal Medicine Specialization Training in the USA (2013 - 2014) - Medical Oncology Department
• Akdeniz University, Faculty of Medicine, Department of Medical Oncology (Received Associate Professorship title)

Work Experience

• 2009 - Kayseri Training and Research Hospital, Hospital
• Acıbadem Kayseri
• 2017 - 2018 - Lara Private Anadolu Hospital
• 2018 - Medical Park Antalya Hospital Complex

Expertise

• Diagnosis of organ tumors
• Chemotherapy in cancer treatment
• Targeted cancer therapies
• Immunotherapy in cancer treatment
• Next-generation genetic research in cancer treatment
• Complementary medicine in cancer treatment
• Medical oncology

Education and Specialization

• Ankara University Faculty of Medicine – Medical Education
• Ankara University Faculty of Medicine – General Surgery Specialization
• Akdeniz University Faculty of Medicine – Associate Professorship
• Akdeniz University Faculty of Medicine – Professorship

Professional Memberships
• Turkish Medical Association
• Mediterranean Health Foundation
• Akdeniz University Development and Health Foundation
• Transplantation Organizations Coordination Association
• National Surgical Association

Professor Amit Tirosh heads the Neuroendocrine Tumors Service at Sheba Medical Center. He specializes in the comprehensive diagnosis of colorectal pathology, focusing on rare neuroendocrine tumors of the gut.

• Trained at the National Institutes of Health in neuroendocrine tumors and genetics
• Serves on international expert panels for hereditary syndromes and clinical guidelines
• Leads a research lab focused on advanced bioinformatics and endocrine oncology
• Author of over 40 medical articles in top journals like Gastroenterology
• Member of the European Neuroendocrine Tumors Society

Dr. Almog Ben Yaacov is a senior surgeon at Sheba Medical Center. He specializes in the surgical management of complex colorectal malignancies and oncology.

• Completed advanced surgical oncology training at Memorial Sloan Kettering Cancer Center in New York
• Performed over 200 HIPEC procedures – a specialized internal chemotherapy used during surgery
• Trained in NanoKnife technology – a precise method that uses electrical pulses to treat tumors
• Graduated with honors and holds board certifications in both general and surgical oncology

Dr. Yahya Ozel is a general surgeon at Estexper Clinic in Istanbul. He has performed over 12,000 procedures during his career. Dr. Ozel specializes in bariatric, metabolic, and oncological surgery. He completed training at Tokyo University Hospital in Japan. This training focused on complex liver and pancreatic surgery.

• Performed over 5,000 bariatric and 2,500 metabolic surgeries.
• Placed more than 4,000 gastric balloons for weight loss.
• Treats gastrointestinal cancers, including stomach, colon, and liver cancer.
• Holds the Turkish Surgical Proficiency Certificate.