Page 2 - Best Tumor Marker Blood Test doctors in Turkey: TOP 103 doctors

Dr. Ceylan Sengul is a child development specialist who works with children aged 0-6 years. She has strong experience with developmental issues such as learning difficulties, ADHD, speech delays, and delayed toilet training. She also helps children with aggressive behaviors, eating disorders, depression, social phobia, panic attacks, addictions, and psychosomatic symptoms.

Dr. Sengul is known for treating school problems, trauma, sibling rivalry, low self-confidence, mood disorders, gender identity concerns, urinary incontinence, and body image issues. She uses evidence-based methods and has helped many children and families achieve better outcomes.

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:

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

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 

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

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

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.

*CURRICULUM VITAE*

*ASSOC. PROF. DR. BURAK ORHAN BORAN*  

Specialist in Neurosurgery  

EDUCATION:

• Turhan and Mediha Tansel Primary School (1979–1984)
• Kültür College (1984–1988)
• Semiha Şakir High School (1988–1991)
• Marmara University Faculty of Medicine (1991–1997)
• Marmara University Faculty of Medicine, Neurosurgery Department, Specialist Training (1997–2002)
• Title of Associate Professor in Neurosurgery (May 31, 2021)

ADDITIONAL TRAINING:

- “Visiting Physician”, University of Southern California, Department of Neurosurgery (1998)

- “Microsurgery Training”, Gülhane Military Medical Academy, Ankara Training and Research Hospital (2003)

*WORK PLACES:*

- GATA Haydarpaşa Training Research Hospital (2002–2003)

- Dr. Lütfi Kırdar Kartal Training Research Hospital (2003–2005)

- Özel Avicenna Ataşehir Hospital (2005–2012)

- Özel 29 Mayıs Hospital (2012–2013)

- Maltepe State Hospital (2013–2018)

- Kartal Dr. Lütfi Kırdar City Hospital (2018–2020)

- Özel Academic Hospital (2020–2022)

- Hisar Intercontinental Hospital (2022–2024)

- Özel Medipol Acıbadem Regional Hospital (2024-present)

*ADMINISTRATIVE AND ACADEMIC POSITIONS:*

- Board Member of the Society of Neurosurgeons (2006–2009)

- Emergency Service Responsibility at Maltepe State Hospital (2014–2016)

- Assistant Chief Physician at Özel Academic Hospital (2020–2021)

- Member of the Advisory Board at Beykent University Faculty of Medicine (2018–2024)

- Faculty Member at Galata University Faculty of Health Sciences (2022–2024)

- Director of the Continuous Education Center at Galata University (2022–2024)

*PUBLICATIONS IN SCIENCE CITATION INDEX AND SCI EXPANDED:*

- Guculu B, Deniz L, Yuce Y, Adilay U, Aytar H, Turkoglu M, Tiryaki M, Ozdek R, Boran BO: Transformational epidural steroid injection in the treatment of pain in foraminal and parameidan lumbar disc herniations. Turkish Neurosurgery 30: 394-399, 2020.

- Boran P, Tokuc G, Boran BO, Oktem S: Intracerebral hematoma as a complication of intrathecal methotrexate administration. Pediatric Blood & Cancer 50:152-154, 2008.

- Boran BO, Boran P, Barut N, Akgun C, Celikoglu E, Bozbuga M: Evaluation of mild head trauma in pediatric population. Pediatric Neurosurgery 42:203-207, 2006.

- Tokuc G, Boran P, Boran BO: Cleidocranial dysplasia in a mother and her daughter within the scope of neurosurgery. Journal of Neurosurgery (4 Suppl Pediatrics) 104:290-292, 2006.

- Celikoglu E, Boran BO, Bozbuga M: Abscess formation in Rathke’s cleft cyst. Neurology India 54(2):213–214, 2006.

- Bozbuga M, Boran BO, Sahinoğlu K: Surface anatomy of the posterolateral cranium regarding the localization of the initial burr-hole for retrosigmoid approach. Neurosurgical Review 29(1):61–63, 2006.

- Boran BO: Rhombencephalosynapsis: a rare cerebellar malformation. Journal of Neurological Sciences (Turkish) 23(1):46-48, 2006.

- Boran BO, Colak A, Kutlay M: Erythropoietin enhances neurological recovery after experimental spinal cord injury. Restorative Neurology and Neuroscience 23:341–345, 2005.

- Colak A, Boran BO, Kutlay M, Demircan N: A modified technique of syringosubarachnoid shunting for the treatment of syringomyelia. Journal of Clinical Neuroscience 12(6):677–679, 2005.

- Bozbuga M, Celikoğlu E, Boran BO: Hydatid cyst of the craniocervical junction: case report. Neurosurgery 57(1):193, 2005.

- Boran BO, Akgün C, Bozbuga M: Calvarial remodeling for the treatment of scaphocephaly in a 4-month-old boy: a technical note. Turkish Neurosurgery 15(1):40-44, 2005.

- Boran BO, Barut N, Akgün C, Çelikoglu E, Bozbuga M: Indications for computed tomography in patients with mild head injuries. Turkish Journal of Trauma and Emergency Surgery 11(3):218–224, 2005.

- Colak A, Kutlay M, Boran BO, Demircan N: Identical twins presenting with hydrocephalus: one with triventricular, and the other tetraventricular hydrocephalus. Turkish Journal of Medical Sciences 34:187-189, 2004.

- Kurtkaya O, Elmacı I, Boran BO, Kılıç T, Sav A, Pamir MN: Dysembryoplastic neuroepithelial tumor of the midbrain tectum: a case report. Brain Tumor Pathology 19(2):97-100, 2002.

- Elmacı I, Kurtkaya O, Boran BO, Kılıç T, Pamir MN: Gliosarcoma associated with neurofibromatosis type 1: a case report. Tumori 87:60-63, 2001.

- Boran BO, Kılıç T, Peker S, Şengöz M, Erdıvanlı B, Pamir N: Gamma-knife radiosurgery in the management of brain metastases. Turkish Neurosurgery 11:9-17, 2001.

*OTHER INTERNATIONAL PEER-REVIEWED PUBLICATIONS:*

- Boran BO, Colak A: Oculomotor nerve palsy due to compression by posterior cerebral artery: case report. Erciyes Medical Journal 29(2):164-167, 2007.

- Bozbuga M, Boran BO, Bayindir C: Tuberculoma of the cavernous sinus. The Internet Journal of Neurosurgery 2(2), 2005.

*PUBLICATIONS IN TURKISH MEDICAL INDEX:*

- Boran BO: Osteoid osteoma of the lumbar spine: case report. Fırat Medical Journal 13(1):71-73, 2008.

- Boran BO: Growing skull fracture: a case operated on eight years later. Inönü University Faculty of Medicine Journal 13(3):185-187, 2006.

- Boran BO: A case report of foot drop following vertebroplasty. Fırat Medical Journal 11(3):185-186, 2006.

- Boran BO, Kızılay G, Bozbuga M: Ventriculoperitoneal shunt dysfunction. Turkish Neurosurgery 15(2):148-151, 2005.

- Boran BO, Dağcınar A, Özek MM: Endoscopic third ventriculostomy role in Dandy-Walker malformation. Kartal Education and Research Hospital Medical Journal 15(1):11-13, 2004.

- Boran BO, Dağcınar A, Özek MM: Repeat endoscopic third ventriculostomy. Kartal Education and Research Hospital Medical Journal 15(1):31-32, 2004.

- Boran BO, Dağcınar A, Özek MM: Endoscopic third ventriculostomy in patients under one year of age. Göztepe Medical Journal 19:83-86, 2004.

Dr. Ercan Ozden is a specialist in internal medicine and medical oncology. He earned his medical degree and completed his residency at Istanbul University, Cerrahpaşa Faculty of Medicine. He later received a subspecialty in medical oncology at Kocaeli University Faculty of Medicine from 2016 to 2020.

Dr. Ozden has worked in medical oncology at Şırnak State Hospital. He has also served as an internal medicine specialist at Bağcılar Private Safa Hospital and Küçükçekmece Batı Bahat Hospital. He has extensive clinical experience in both internal medicine and oncology.

EDUCATION:

2015

Uludag University, Ophthalmology

2008

Eskisehir Osmangazi University, Faculty of Medicine

2001

Kırıkkale Science High School, Numerical

EXPERIENCE:

2019 Gazi University Faculty of Medicine Ophthalmology (Vitreo-Retinal Surgery and Medical Retina Fellowship)

2016 SBÜ Zekai Tahir Burak EAH (Retinopathy of Prematurity Fellowship)/

2015 - 2023 Kocaeli Derince Training and Research Hospital

2023 - Medipol University Pendik Hospital

Dr. Baha Zengel is a general surgeon with expertise in breast, gallbladder, thyroid diseases, and hernia repairs. He graduated from Ege University Faculty of Medicine in 1990. In 2004, he earned a doctorate in Basic Oncology from Dokuz Eylül University. He became an Associate Professor of General Surgery in 2014 through the Inter-University Board.

Dr. Zengel is skilled in advanced surgical procedures. His experience includes skin and breast-conserving mastectomy, oncoplastic breast surgery, laparoscopic cholecystectomy, sentinel lymph node biopsy, and ROLL/SNOLL techniques. He has held important positions at Izmir Bozyaka Training and Research Hospital, including Education Officer.

He is a member of several professional associations. He serves on the Board of Directors of the Aegean Region Surgery Association and is a founding board member of the Basic Oncology Association.

Prof. Selin Kapan has been a Professor of General Surgery since 2017. She is currently with Istanbul Aydın University, Faculty of Medicine, Department of General Surgery (2022–present). She previously worked at Bakırköy Dr. Sadi Konuk Training and Research Hospital as a Specialist and Associate Professor. She also served as Educational and Administrative Supervisor at Kanuni Sultan Süleyman Training and Research Hospital. In addition, she was Medical Coordinator and General Surgeon at Istanbul Surgery Hospital.

She has authored or co-authored more than 50 peer-reviewed papers. Her research covers hernia repair, perianal fistula, pilonidal disease, hepatic hydatid disease, laparoscopic surgery, and gastrointestinal surgery. Her work has been published in journals such as Digestive Surgery, Hernia, Techniques in Coloproctology, and the Journal of Gastrointestinal Surgery. She is a member of the Turkish Surgical Association, the National Trauma and Emergency Surgery Association, the Hernia Society, the Turkish HPB Surgery Association, the Stem Cell and Cellular Therapies Association, and the Gastroesophageal Reflux Association.

Dr. Zuhal Cakmak Peksen is a Family Medicine Specialist since 2017. She earned her MD from Çukurova University in 2010. She completed specialty training at Yüzüncü Yıl University between 2013 and 2017. She is currently studying for a bachelor’s degree in Health Management at Anadolu University (2024–present).

She has 15 years of clinical practice (2010–2025) across 8 institutions. Her experience includes research in Family Medicine (2013–2017) and work at several Family Health Centers. Since 2020, she has served at TOKİ Avrupa Family Health Center in Gaziosmanpaşa, Istanbul.

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. 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. Mustafa Gurelik is a neurosurgeon who graduated from Cumhuriyet University Faculty of Medicine in 1989. He completed his specialization in 1997. He has worked at Cumhuriyet University, Sivas Anadolu Hospital, and Malatya Gözde Hospital.

Dr. Gurelik treats brain and spinal cord tumors, brain hemorrhages, spine diseases, and traumatic injuries to the head and spine. He is skilled in pituitary surgery, shunt and endoscopic procedures for hydrocephalus, and treatments for lumbar and neck hernias. He also manages cerebrovascular aneurysms and nerve compression syndromes such as carpal tunnel. Dr. Gurelik is known for his high success rates and dedication to advanced neurosurgical care.