Colon Cancer Doctors Worldwide

Prof. Sezer Sağlam specializes in gastrointestinal oncology with over 27 years of experience at top hospitals in Istanbul.

• Professor of Medical Oncology since 2016
• Fellowship-trained at Istanbul University Medical Faculty
• Member of ESMO, ASCO, and European Neuroendocrine Tumor Society
• Works at Gayrettepe Florence Nightingale Hospital

Dr. He Weibing is a pioneer of argon-helium cryoablation in China with more than 20 years of frontline practice. He was a founding member of Fuda Cancer Hospital (Guangzhou). He co-founded its Minimally Invasive Tumor Treatment Center and served as Executive Deputy Director. He also helped found the Ablation Group of the China Anti-Cancer Association. He has been the primary operator in more than 10,000 procedures.

He specializes in tumor cryoablation and is proficient in 125I seed brachytherapy, with a focus on liver and lung cancers. He proposed ten argon-helium techniques. Key co-authored data include: lung cryotherapy n=508; NSCLC n=120 (CR 25.5%, PR 41.8%, 6/12/24-month survival 64%/55%/36%); pancreatic cancer n=38 (median survival 12 months). He served on editorial boards in 2008 and 2010. He has been a national trainer for Varian and Boston Scientific since 2001.

Dr. Ayshe Okumush is a radiation oncologist at Private NeoLife Medical Center. She earned her MD from Karadeniz Technical University in 2003. She completed a residency in radiation oncology at Sisli Etfal Training and Research Hospital from 2006 to 2011.

She served as a specialist at Diyarbakir Uckuyular Training and Research Hospital from 2011 to 2013 and at Sisli Etfal from 2013 to 2016. She then worked at Yeni Yuzyil University Private Gaziosmanpasa Hospital from 2016 to 2026. She joined NeoLife in 2026.

Memberships: Turkish Society for Radiation Oncology (TROD) and the European Society for Radiotherapy and Oncology (ESTRO). Clinical focus: SRS, SRT, SBRT; VMAT, IMRT; radiotherapy for head and neck, lung, and brain tumors; SGRT, TBI, and 3D brachytherapy.

Dr. Einat Shacham Shmueli is a senior medical oncologist at Sheba Medical Center. She specializes in gastrointestinal cancers, treating the colon, stomach, and pancreas. Dr. Shacham Shmueli holds dual board certifications in oncology and gastroenterology. She trained at UCSF in the United States. Her clinic at Sheba Medical Center is ranked among the top 10 hospitals worldwide.

• Authored over 25 peer-reviewed publications on tumor biology and new treatments.
• Serves as an investigator for the National Cancer Institute (NCI) programs.
• Manages metastatic disease using precision diagnostics and specialized biomarkers.
• Member of the Israel Society of Oncology and Radiotherapy.

Dr. Mehmet Salih Iyikesici is a medical oncologist. His work focuses on metabolically supported chemotherapy (MSCT), ketogenic diet–supported cancer care, hyperthermia, hyperbaric oxygen therapy, and insulin potentiation therapy. He emphasizes care for breast, pancreatic, and gastric cancers.

He is a Medical Oncology Specialist at Neolife Medical Center (2026–present). He previously served at Private Bahçelievler Medical Park (2013–2026), Medicana Beylikdüzü (2010–2013), Silivri Anadolu (2009–2010), Diyarbakır Training and Research (2008–2009), and Bursa Çekirge State (2006–2008). Earlier, he worked as an Internal Medicine Specialist (1997–2003). He was an Assistant Professor at Altınbaş University (2014–2026).

Training: Medical Oncology subspecialty, Marmara University (2003–2006). Internal Medicine, Istanbul Haydarpaşa Numune (1992–1996). Medicine, Uludağ University (1985–1990). Member, Medical Oncology Association (since 2004). His recent research (2019–2020) covers gastric, breast, pancreatic, and lung cancers. Topics include long‑term survival in metastatic pancreatic cancer and feasibility in metastatic non‑small cell lung cancer (NSCLC).

Professor Doctor Sefik Igdem specializes in radiation oncology at Gayrettepe Florence Nightingale Hospital.

• Over 30 years of experience in radiation oncology
• Expert in conformal treatments for prostate cancer
• Uses advanced Truebeam Stx and Halcyons technologies
• Former Associate Professor at T.R. Demiroğlu Bilim University
• Specialized training from Istanbul University Cerrahpaşa Faculty of Medicine

Dr. David Kuczer is a radiation oncologist at Amethyst Radiotherapy in Vienna. He specializes in precise cancer treatment for tumors of the prostate, breast, and brain. Dr. Kuczer presents every patient case to an interdisciplinary tumor board. This ensures each person receives a validated treatment plan from a team of experts.

• Uses the Elekta Versa HD linear accelerator for precise tumor targeting.
• Treats complex conditions including glioblastoma, lung cancer, and meningioma.
• Coordinates care within a clinic ranked among Newsweek's World's Best Hospitals 2026.
• Provides IMRT, VMAT, and stereotactic radiosurgery for high-accuracy radiation.

Dr. Almog Ben Yaacov is a senior surgical oncologist at Sheba Medical Center. He has performed over 200 HIPEC procedures for complex abdominal cancers. He focuses on treating gastric cancer, sarcoma, and colorectal malignancies. Dr. Ben Yaacov holds board certifications in both General Surgery and Surgical Oncology.

• Completed surgical oncology training at Memorial Sloan Kettering in New York.
• Uses NanoKnife and microwave liver ablation for targeted tumor treatment.
• Maintains ESSO certification for cytoreductive surgery and HIPEC.
• Works at Sheba Medical Center, ranked among the world’s top 10 hospitals.

Dr. Amit Tirosh is the Head of the Neuroendocrine Tumors (NET) Service at Sheba Medical Center. He is an international authority on von Hippel–Lindau (VHL) disease and hereditary tumor syndromes. Dr. Tirosh contributed to global clinical guidelines for VHL management. He also leads the Endocrine Oncology Bioinformatics Lab at Sheba.

• Contributor to the international expert panel on VHL management guidelines.
• Authored over 40 peer-reviewed papers in journals like JAMA and Gastroentrology.
• Maintains research affiliations with the NIH and the Weizmann Institute.
• Performs specialized NET treatments, including Lutetium-177 therapy and PRRT.

Professor Xiao Yueyong is Chief Physician in the Department of Radiological Diagnosis at the Chinese PLA General Hospital. He is a leading expert in minimally invasive interventional oncology. He serves as the inaugural President of WATA (2025–). He is President of the International (2020–) and Asian (2012–) Societies of Cryotherapy. He is also Deputy Head of the NHC Expert Group on tumour ablation regulations (2009–).

He has performed over 100,000 CT/MRI‑guided minimally invasive procedures. His work covers chemical ablation, RFA, MWA, cryoablation, and NanoKnife (IRE). He introduced and advanced NanoKnife ablation in China. He led the first national standards for tumour cryoablation and NanoKnife.

Honors include the National Special Contribution Award (Lifetime Honorary). He received First Prize from the Chinese Medicine Education Association (2021). He received two Second Prizes for Military Medical Achievements (2016, 2018) and two Second Prizes from the China Anti‑Cancer Association (2019, 2022). He was named Asian Ablation Master. His research record includes 13 Chinese patents. He is the principal investigator for four NSFC projects and one MOST subject. He has published over 200 papers, with over 110 as first or corresponding author and over 40 in SCI journals. He has led over 10 ablation guidelines or consensus statements.

Dr. Yuri Goldes is the Deputy Director of General Surgery at Sheba Medical Center. He pioneered some of Israel’s first robotic resections for stomach and pancreatic cancers. Forbes Israel named him among the nation’s best gastrointestinal surgeons. In 2019, he received the Best Doctor of the Year award from the Israeli Ministry of Health.

• Specializes in robotic and laparoscopic surgery for pancreatic, gastric, and esophageal cancers.
• Performs minimally invasive Whipple procedures, one of the most complex abdominal operations.
• Treats benign conditions including diaphragmatic hernia, achalasia, GERD, and gallbladder disease.
• Works at Sheba Medical Center, ranked among the Top 10 hospitals worldwide by Newsweek.

Dr. Sinan Karaaslan is a medical oncologist at Anadolu Medical Center in Istanbul. He specializes in treating breast, colorectal, and urogenital system cancers. Dr. Karaaslan brings clinical expertise from major institutions, including Medical Park and Gülhane Military Medical Academy. He works at a hospital affiliated with the Johns Hopkins Hospital.

• Holds personal certification from the European Society for Medical Oncology.
• Treats complex conditions, including stage 4 colon and lung cancers.
• Member of the Turkish Medical Oncology and Turkish Lung Cancer societies.
• Performs systemic therapies such as immunotherapy, targeted therapy, and chemotherapy.

Ranked 1st in Turkey in the Medical Oncology Proficiency Exam – Dr. Keskin brings 25 years of dedicated expertise to colon cancer treatment at Memorial Şişli Hospital.

• Performed 1,100+ cancer treatments including advanced immunotherapy
• Best Poster Award at 19th National Cancer Congress
• Active member of ASCO and ESMO oncology societies
• Published 42 articles in international medical journals

1,100+ treatments performed – Associate Professor Mustafa Solak specializes in gastrointestinal cancers, including colon cancer, at Hisar Hospital Intercontinental.

• 20 years of experience in clinical oncology
• Fellowship-trained at Hacettepe University Cancer Institute
• Worked at The University of Texas MD Anderson Cancer Center
• Specializes in breast, testicular, ovarian, lung, and head & neck cancers

Prof. Kivanc Derya Peker has performed over 400 pancreatic and gastric cancer surgeries, specializing in complex gastrointestinal procedures at Hisar Hospital Intercontinental.

• Trained at Mayo Clinic in Hepatopancreatobiliary Surgery
• Founder of Hepatopancreatobiliary Surgery unit at Bakirkoy Dr. Sadi Konuk Hospital
• Expert in liver, pancreas, and stomach cancer surgeries
• Specializes in obesity-metabolic surgery and endoscopic treatments

Dr. Mustafa Ozdogan is a professor and medical oncology specialist at Memorial Göztepe Hospital. He is the current President of the Antalya Breast Cancer Association. Dr. Ozdogan previously led oncology departments at Memorial Antalya and Medstar Antalya hospitals. He focuses on a multidisciplinary approach to complex cancer care.

• Sits on the board of the Turkish Society of Medical Oncology.
• Maintains active membership in ESMO and ASCO.
• Co-chairs the national working group for head and neck cancers.
• Works at Memorial Göztepe, which features MR Linac and robotic surgery systems.

Performed 2,500+ radiotherapy sessions with MR-Linac – Assoc. Prof. Gorkem Turkkan specializes in advanced radiation treatments at Hisar Hospital Intercontinental.

• Expert in stereotactic and MRI-guided radiotherapy
• Published 27 articles in domestic and international journals
• Member of European Society of Radiotherapy and Oncology since 2015
• Completed fellowship at Maastricht University on thoracic radiotherapy

Professor Yesim Yildirim specializes in cancer immunotherapy and targeted therapies, with over 80 international publications. She works at Anadolu Medical Center.

• Member of European Society of Medical Oncology (ESMO)
• Expert in breast, gastrointestinal, and lung cancers
• Professor at Haliç University, Istanbul
• Completed advanced training at Mount Vernon Cancer Center, UK

Assoc. Prof. Dr. Heves Sürmeli is a specialist in Internal Medicine and Medical Oncology. She received her medical degree (M.D.) from Eskişehir Osmangazi University in 2004. She completed her Internal Medicine residency at Kartal Dr. Lütfi Kırdar Training and Research Hospital, Istanbul (2005–2010). She then completed subspecialty training in Medical Oncology at the same hospital (2014–2017).

At the same center, she served as a Medical Oncology Specialist (2017–2023). She then worked as Administrative and Clinical Director (2023–2026). Her clinical interests include breast, lung, gynecologic, gastrointestinal, and urologic cancers.

She has published many articles in international peer‑reviewed journals. She has presented at national and international conferences. She is active in professional societies. She has received several awards.

Professor Ido Wolf heads the entire oncology department at Tel Aviv Medical Center, one of Israel's leading hospitals. He has specific experience treating colorectal and liver tumors.

• Heads the Medical Oncology Division at Sourasky Medical Center (Ichilov)
• Holds over 34 years of experience in oncology and internal medicine
• Medical training at the prestigious Sackler Faculty of Medicine, Tel Aviv University
• Specializes in the complex diagnosis and management of gastrointestinal cancers