Page 3 - Best Tumor Marker Blood Test doctors: TOP 190 doctors

Prof. Dr. Sezer Sağlam is a medical oncologist at Gayrettepe Florence Nightingale Hospital. He specializes in gastrointestinal and breast cancers. He has contributed to cancer care through research, especially with his study on the best timing for surgery after neoadjuvant therapy in rectal cancer. This work has influenced global treatment protocols.

Dr. Sağlam has led clinical trials in targeted therapies and precision medicine. His research on liver-transplanted patients with hepatocellular carcinoma was nominated for the 2024 International Best Researcher Award. He is a member of ASCO, ESMO, and ENET. Dr. Sağlam provides personalized and evidence-based oncology care.

Present
Istanbul Florence Nightingale Hospital
Medical Oncology

2022-2024
Memorial Şişli Hospital
Medical Oncology Specialist

2021-2022
Institut Jules Bordet
Clinical Research Fellowship

2020-2022
Marmara University Pendik Training and Research Hospital
Medical Oncology Specialist

2019-2019
Institut Jules Bordet
Clinical Research Fellowship

2016-2019
Marmara University Faculty of Medicine, Department of Medical Oncology
Medical Oncology Fellowship

2014-2016
Golbasi Public Hospital
Internal Medicine Specialist

2013-2014
MD Anderson Cancer Center
Observership

2013
Bellvitge Hospital, Barcelona, Spain
Observership

2009 -2014
Hacettepe University Faculty of Medicine
Internal Medicine Residency

Prof. Dr. med. Karl J. Oldhafer is a Senior Consultant of the Department of General and Abdominal Surgery and Surgical Oncology at the Abdominal Medical Center of the Barmbek Asklepios Hospital and is a specialist in hepatic surgery. His medical interests include radioservice computer-navigated liver surgery, metastasis surgery, surgery using the ultrasonic knife, minimally invasive abdominal surgery, hepatobiliary surgery, and pancreatic surgery.

One of the best cancer specialists in Europe, educator, and cancer researcher, President of the Central European Cooperative Oncology Group (CECOG).
Has published over 600 scientific papers on cancer treatment.

Education

MD; Hacettepe University Faculty of Medicine (2001)

Residencies

Internal Medicine; Ministry of Health Ankara Diskapi Education and Research Hospital (2009)

Pathology; Gazi University Faculty of Medicine (2004)

Fellowships

Gastroenterology and Hepatology; Necmettin Erbakan University Faculty of Medicine (2013)

Experiences

Demiroglu Bilim University Faculty of Medicine, Department of Gastroenterology and Hepatology

Istanbul Florence Nightingale Hospital (2019- currently)

Alanya Alaaddin Keykubat University Faculty of Medicine, Department of Gastroenterology and Hepatology (2017-2019)

Bundang CHA Hospital, Seoul, Korea (2018)

Konya Education and Research Hospital, Department of Gastroenterology  (2014-2017)

Certificates

Advanced Endoscopy Certificate, Bundang CHA Hospital, Seoul, Korea, 2018

Bariatric Endoscopy Certificate, Bariatric Endoscopy Global course, Sao Paulo, Brazil, 2020

Awards

2019 Rising Star, 10th Digestive Disease and Endoscopy Symposium

Memberships

Turkish Society of Internal Medicine

Turkish Society of Gastroenterology

ERCP Study Group at Turkish Society of Gastroenterology

European Society of Gastrointestinal Endoscopy

Women in Endoscopy, American Society of Gastrointestinal Endoscopy

Education and Expertise

Selcuk University Meram Faculty of Medicine - Medical Education

Dr.Abdurrahman Yurtaslan Anakara Oncology Training and Research Hospital Medical Oncology Specialization

Experience

Malatya State Hospital Internal Diseases Clinic

Ankara Oncology Hospital Medical Oncology Clinic

Erzurum Regional Training and Research Hospital Medical Oncology Clinic


AREAS OF INTEREST

Lung cancer

esophageal cancer

Gastric cancer

breast cancer

Gastrointestinal surgery

https://scholar.google.com.tr/citations?user=EDuylhoAAAAJ&hl=tr 

Education:

Teaching course on “Lymphatic mapping and sentinel node”

June 1998, MDA Cancer Center, Houston, Texas, USA

General Surgery

Feb. 1993 – Dec. 1996, Şişli Etfal Hospital, Istanbul, Turkey

General Surgery

May 1990 – Jan. 1993, Lille University Hospital, Lille, France 

M.D.

1983 – 1990, Cerrahpasa School of Medicine, Istanbul, Turkey

Experience

Attending General Surgeon, Jan. 1998 – present 

F.N. Metropolitan Hospital, Istanbul, Turkey

American Cancer Center, Breast Surgery

Attending General Surgeon, 1996 – present 

Medmar Diagnostic Center, Istanbul, Turkey

Diagnosis and monitoring with sophisticated techniques 

General Surgeon, 1996 – 1998

Guzelbahce Medical Center and Yeditepe Hospital, Istanbul, Turkey

Specializing in breast and thyroid surgery

Pichai Kittipanyaworakul, M.D.
Pichai Kittipanyaworakul, M.D.

INTERNAL MEDICINE / GASTROENTEROLOGIST AND HEPATOLOGIST

Graduation (M.D. From)

Bachelor of Medicine, Faculty of Medicine, Chiang Mai University

Certificates

Diploma in Internal Medicine, Faculty of Medicine, Chulalongkorn Memorial Hospital, Thai Red Cross Society

Diploma of Internal Medicine in Gastroenterology and Hepatology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University

Current Positions

INTERNAL MEDICINE / GASTROENTEROLOGIST AND HEPATOLOGIST AT INTRARAT HOSPITAL

Associate Professor Dr. Yusuf AÇIKGÖZ
Specialization: Medical Oncology

Education:

• 2004-2011: İnönü University Faculty of Medicine
• 2011-2016: Ankara Numune Training and Research Hospital, Internal Medicine
• 2017-2022: Health Sciences University, Medical Oncology

Professional Experience:

• 2016-2017: Bingöl City Hospital, Internal Medicine
• 2021-2022: Health Sciences University, Medical Oncology
• 2022-2023: Kastamonu Education and Research Hospital, Medical Oncology
• 2023-2024: Ohio State University, Medical Oncology
• 2024-Present: Lokman Hekim University, Medical Oncology, Ankara Hospital

Clinical Trials, Courses, Certifications:

Clinical Trials:

• 2017-2021: Phase III, CheckMate-649 Study (Assistant Investigator)
• 2022-Present: Phase III, Fortitude-101 Study (Assistant Investigator)

Courses:

• 2018: Medicres Basic and Advanced Biostatistics Training Program (ongoing), Istanbul-Vienna
• 2019: Immuno-Oncology Education Course, March 1-2, 2019, Vienna, Central European Cooperative Oncology Group (CECOG)
• 2018: Good Clinical Practice Certification, April 7-8, 2018, Ankara, Health Sciences University
• 2017: Basic Oncology Training Program, November 25-26, 2017, Adana, Clinical Oncology Society
• 2016: Basic Ultrasonography Course (10 hours theoretical + 10 hours practical), September 24-25, 2016, Ankara, Turkish Emergency Medicine Association

Certifications:

• Ongoing: ECFMG Certification
• 2024: CITI Responsible Conduct of Research (The Ohio State University)
• 2024: CITI IACUC-Laboratory Animal Research (The Ohio State University)
• 2024: CITI Human Subjects Protection (The Ohio State University)
• 2024: CITI Good Clinical Practice (The Ohio State University)
• 2023: Occupational English Test (OET)
• 2019: International English Language Testing System (IELTS), Total Score: 6.5, May 26, 2019, Ankara, British Council
• 2017: USMLE Step 2 CK Exam; Score: 244, February 7, 2017
• 2016: USMLE Step 1 Exam; Score: 215, August 25, 2016

Memberships:

• American Society of Clinical Oncology (ASCO) - 2022
• Turkish Society of Medical Oncology - 2020

Education and Specialization

• Bachelor’s Degree: Çukurova University Faculty of Medicine (1987/1993)
• Medical Specialization: Department of Pediatrics, Fırat University (1993/2001)
• Subspecialty: Pediatric Neurology Unit, Hacettepe University (2002/2004)

Professional Experience

• General Practitioner: Mardin State Hospital, Emergency Department (1993/1996)
• Research Assistant: Faculty of Medicine, Fırat University (1996/2001)
• Lecturer: Faculty of Medicine, İnönü University (2001/2002)
• Subspecialty Research Assistant: Faculty of Medicine, Hacettepe University (2002/2004)
• Assistant Professor: Faculty of Medicine, İnönü University (2004/2008)
• Associate Professor: Faculty of Medicine, İnönü University (2008/2014)
• Professor: Faculty of Medicine, İnönü University (2014/2023)

Dr. Harald Rosen is a leading abdominal surgeon. He specializes in endocrine, gastrointestinal, liver, colon, and bariatric surgeries. His expertise includes complex procedures such as sleeve gastrectomy and gastric anastomosis. Dr. Rosen is known for his research on improving the quality of life for rectal cancer patients after surgery. He also has a strong academic background in surgical oncology, with a focus on gastroenterology and breast cancer.

Dr. Rosen is President of the European Society of Surgery. He is also a Professor of Surgery at Vienna Medical School. He is accredited by the European Council for Surgical Qualifications and the Austrian Medical Council. Dr. Rosen has performed over 5,000 advanced surgeries with excellent results. He has published widely and is often invited as a visiting professor around the world.

Education and Specialization

• 2006: Kocaeli University Faculty of Medicine
• 2014: Akdeniz University Faculty of Medicine, Internal Medicine
• 2018: Akdeniz University Faculty of Medicine, Medical Oncology

Experience

• 2006 - 2008: Konya Derebucak District Hospital
• 2009 - 2015: Akdeniz University Hospital
• 2015: Antalya Kaş State Hospital
• 2015 - 2016: İnönü University Faculty of Medicine
• 2016 - 2021: Akdeniz University Hospital
• 2021 - 2023: Antalya Training and Research Hospital

Kodchanut Litleaungdej, M.D.

Dr. Saban Sec is a medical oncologist with experience at leading hospitals, including Haseki Training and Research Hospital, Prof. Dr. Cemil Taşcıoğlu City Hospital, and Bahçelievler Medikalpark Hospital. He currently represents specialist physicians in the Turkish Medical Oncology Association. He is also a member of the Istanbul Medical Chamber and the Turkish Medical Oncology Association.

Dr. Sec treats breast, lung, gastrointestinal, prostate, urogenital, head and neck cancers, as well as sarcomas and rare tumors. He has published many peer-reviewed articles on cancer prognosis, treatment outcomes, and survival rates. His research includes studies with large patient groups, such as 138 patients with HER2-positive metastatic gastric cancer. Dr. Sec focuses on prognostic factors and treatment responses in different cancers. He is dedicated to improving cancer care.

Education and Specialization

• Bachelor’s Degree in Medicine (English) – Hacettepe University, 1997
• Master’s Degree – Department of Internal Medicine, Akdeniz University, 2004
• Ph.D. / Proficiency / Medical Specialization – Division of Gastroenterology, Akdeniz University, 2007

Experience

• Akdeniz University Faculty of Medicine 1998/2004
• Akdeniz University Faculty of Medicine  2004/2007
• Urfa Training and Research Hospital 2008/2009
• Akdeniz University Faculty of Medicine, Department of Internal Medicine, Division of Gastroenterology  2010/2011
• Akdeniz University Faculty of Medicine, Department of Internal Medicine, Division of Gastroenterology 2011/2013
• Akdeniz University Faculty of Medicine, Department of Internal Medicine, Division of Gastroenterology 2013/2017
• Medical Park Antalya Hospital, Gastroenterology Department and Organ Transplant Center

Education

2005 – M.D., Istanbul University, Istanbul Faculty of Medicine

2010 – Internal Medicine Specialization, Haseki Training and Research Hospital

2021 – Gastroenterology Subspecialty Training, Sakarya University Faculty of Medicine

Academic & Professional Experience

Assistant Professor, Istanbul Florence Nightingale Hospital

Assistant Professor, Istanbul Bilim University Faculty of Medicine

Assistant Professor, Istanbul Yeni Yüzyıl University Faculty of Medicine

Head of Department, Giresun University Faculty of Medicine

Scientific Publications

Dr. Acar has authored over 20 international peer-reviewed articles in the fields of internal medicine and gastroenterology. Her notable contributions include studies and case reports on:

Gastrointestinal bleeding management in anticoagulant users

Rare GI cases such as bezoars, aortoesophageal fistulas, and massive hemorrhagic ascites

Liver transplantation complications, including graft-versus-host disease

The role of (pro)hepcidin in IBD-related anemia

Endoscopic interventions for acute GI bleeding

Covid-19 treatment agents and their GI implications in Turkey

(Full publication list available upon request)

Clinical Expertise

Gastrointestinal bleeding & endoscopic procedures

Hepatology & liver disease management

Inflammatory bowel diseases (IBD)

Complex GI case diagnostics

Post-transplant GI complications

Diabetic GI and cardiovascular comorbidities

Pediatrician, Pediatric Gastroenterology and Nutrition Specialist

Education

Yeditepe University School of Medicine

Professor of Pediatrics (Chair of the Department)

2004 - 2007

Dokuz Eylül University School of Medicine

Pediatric Gastroenterology Sub-specialty

1995 – 1998

Hacettepe University School of Medicine

Pediatrics Instructor

1985 - 1987

Professional Experience

Ataşehir Florence Nightingale Hospital

Pediatrician, Pediatric Gastroenterology

2017 – Present

Kadıköy Şifa Ataşehir Hospital

Pediatric Gastroenterology and Nutrition

2013 – 2017 

Dokuz Eylül University School of Medicine

Professor of Pediatrics

1994 – 2004

Publications

Cevik N, Buyukgebiz B. Interaction between human blood group (ABO) substances and enteropathogenic

bacterial agents. Turk J Pediatr. 1987. Link

Buyukgebiz B, Ozalp I, Oran O. Investigation of serum vitamin A levels of children who had a history of

recurrent diarrhoea. J Trop Pediatrics. 1990. Link

Languages

Turkish: Native

English: Advanced