ページ2 - 最高の結腸癌ステージ4医師 - トップ33名の医師

Assoc. Prof. Atakan Topçu, M.D., is a medical oncologist at Medipol University and Medipol Acıbadem Regional Hospital. He treats solid tumors, including lung, breast, colorectal, gastric, and neuroendocrine cancers. His work also covers targeted therapies, immunotherapy, geriatric oncology, and cancer-related malnutrition, cachexia, and sarcopenia.

He has authored more than 50 peer-reviewed papers. Recent work includes a 2024 Frontiers in Medicine study on geriatric syndromes and a 2023 Future Oncology paper on sarcopenia and anxiety in lung cancer. He has also published on the CONUT score in breast cancer and on malnutrition in HER2-negative metastatic gastric cancer.

Dr. Topçu serves on the Editorial Board of BMC Cancer. He is a member of the Turkish Society of Medical Oncology, ESMO, and the Turkish Geriatrics Society. Education and training: M.D., Uludağ University; residency in Internal Medicine, Marmara University; fellowship in Medical Oncology, Bezmialem Vakıf University.

Dr. Irfan Cicin is a Professor of Medical Oncology at the Trakya University Faculty of Medicine (2015–present). He has over 20 years of medical oncology experience and has held academic roles since 2010.

Education: MD, Istanbul University – Cerrahpaşa (1991–1997). Residency in Internal Medicine, Trakya University (1997–2002). Fellowship in Medical Oncology, Trakya University (2002–2004).

Practice: Medical Oncologist, Trakya University (2005–2008). Medical Oncologist, Elazığ Training and Research Hospital (2008–2010). Associate Professor of Medical Oncology, Trakya University (2010–2015). He previously served as a physician in the Turkish Air Force at Etimesgut Military Hospital (2004–2005).

Dr. Muhammed Mustafa Atci is an Associate Professor of Medical Oncology at İstinye University, Liv Hospital Topkapı (2025–present). He previously served as Associate Professor and Education Coordinator at Prof. Dr. Cemil Taşcıoğlu City Hospital (2023–2025). He was also a Medical Oncologist there (2018–2021).

He has been a member of ASCO and the Turkish Society of Medical Oncology since 2018. He is the author or co-author of 19 peer-reviewed international papers on colon, breast, gastric, pancreatic, lung, thyroid, sarcoma, and colorectal cancers.

Notable works include a multicentre study on stage IIB colon cancer survival (Journal of Chemotherapy). He also studied the De Ritis ratio for lung metastasis in testicular cancer (Current Urology). His prognostic studies used PET/CT, MSI, lymph node ratio, and metabolic tumor volume.

Assoc. Prof. Ayşe İrem Yasin, M.D., is a medical oncologist who specializes in solid tumors. Her clinical focus includes breast, lung, gastrointestinal, gynecologic, and urologic cancers. She also treats brain and other CNS tumors, soft tissue sarcomas, head and neck cancers, adenocarcinomas, melanoma, Merkel cell carcinoma, and cancers of unknown primary. She practices at Medipol Acıbadem District Hospital (2025–present). She previously worked at Şişli Etfal Training and Research Hospital (2023–2025).

She completed a Medical Oncology fellowship at Bezmialem Vakıf University (2019–2022). This followed an Internal Medicine residency at the same institution (2012–2016). Her international experience includes the Breast Cancer Unit at the University of Piemonte Orientale in Novara (2022). She also trained at Basel University Hospital, Cleveland Clinic, and Harvard Medical School. She holds the ESMO Board Certificate (2022).

One of the world-renowned pioneers in gastrointestinal surgery. Has developed new techniques for the colon and rectum cancer treatment TaTMEТ and NOTES — applied now around the world.
Has performed over 15,000 surgeries.
Performs over 1,000 interventions a year using minimally invasive techniques.
President of the Association of Surgeons-Endoscopists in Europe.

Dr. Johann Ockenga is a Surgical Oncologist and Gastrointestinal Surgeon with 20 years of experience in treating various conditions, including Sigmoid adenocarcinoma, Hepatocellular Carcinoma, Hepatitis B, Liver Diseases, Immunology and Colon cancer. He is the Secretary of the German Society of Nutritional Medicine, has developed guidelines for nutritional medicine, and has contributed to various publications.

Oncologist

Professor Jorg Groticke is the Chief Physician of the Oncology and Hematology Center at Bremen Mitte Hospital, specializing in the treatment of hematological malignancies and gastrointestinal tract tumors. He is a member of multiple medical organizations, and offers remote consultations for second opinions.

Dr. Huseyin Bektas is a Professor of Medical Sciences, Oncosurgeon and published author. He is a Member of the Association of Hepatobiliary and Pancreatic Surgery and a Teacher at the Hanover School of Medicine. He is also the Chief Physician at the Bremen-Mitte Hospital Department of General, Visceral and Oncological Surgery.

Onco-surgeon. Specializes in gastrointestinal tract surgery and breast cancer.

Medical Interests and Activities 

• Gastrointestinal diseases 

• Oncologic laparoscopic surgery 

• Anorectal area diseases 

• Urgent surgical cases (acute cholecystitis, divertikülit, ileus, pankreatit, appendicitis) 

• Colon and rectum cancer 

• Treatment of oncologic surgical cases with further laparoscopic and robotic surgery. • Laparoskopik hernia surgery 

• Esophagus and stomach cancer 

• Selim anorectal diseases (hemorrhoidal disease, anal fissure), perianal fistula, pilonoidal sinus (hairless- non-surgical treatment)

Education and Experience 

• İstanbul University Medical Faculty 1988 • University of Colorado Health Science Center – Intern Surgeon 

• Isparta, Dedeçam Şehit Ramazan Karaca Health Center (1995-1996) • İstanbul Surgery Hospital – American Hospital (2000-2001) 

• Chief assistant Istanbul Medical Faculty, Department of General Surgery (2001-2008) • World Congress on Peritonel Surface Malignancies (HIPEC course) Berlin, Germany (2012) 

• USC Keck School of Medicine, Los Angeles, CA, USA (2006-2007) 

• Assoc. Prof. M.D. , İstanbul Medical Faculty General Surgery (2008-2014) 

• Da Vinci Robotic Intensive Course at IRCAD, Strasbourg, France (2011) 

• Stony Brook Medicine Cadaver Training Event in Colon and Rectal Surgery, New York, USA (2016) (Instructor) 

• Fellow of the European Board of Surgery- Emergency Surgery (FEBS EmSurg) Honorary Diploma (2017) 

• Prof. M.D. , İstanbul Medical Faculty General Surgery (2014 -2017) 

• İstanbul University Medical Faculty – General Surgery Master of Science 1996 

• University of Southern California Medical Center, Department of General Surgery, Los Angeles, USA – February 2006 – February 2007

Scientific Publications • Endoscopic Laparoscopic & Minimal Invasive Surgery Journal Editorial Board / National Scientific Committee • UTACD Assist. Editor