Best Doctors in the World

Education

2004 - 2010 Kaunas University of Medicine, Master’s degree, professional qualification of medical doctor
2011 Kaunas Hospital, therapeutic internship
2011 - 2015 Hospital of Lithuanian University of Health Sciences, Kaunas Clinic, dermatovenereology residency

Professional experience

2011 - 2012 Lithuanian University of Health Sciences, Eurostars SkinMonitor project “Diagnosis of Skin Cancer Based on ICT Tools”,  junior researcher
2013 - 2015 Lithuanian University of Health Sciences, Clinic of Skin and Venerial Diseases, educational activities, assistant
2015 Hospital of Lithuanian University of Health Sciences, doctor’s assistant
2015 - present Kaunas Dainava Clinic, dermatovenerologist
2015 - 2016 Biofirst Clinic, dermatovenerologist
2016 present Kardiolita Hospital, dermatovenerologist

Professional training

Internships in Hamburg (Germany), Istanbul (Turkey) and Trieste (Italy)

Dr. Merdan Fayda is a radiation oncologist with 19 years of experience in radio-oncology. He has studied at the Faculty of Medicine at the University of Istanbul and studied radiosurgery at the University of North Carolina (USA). He conducts 4D-radiotherapy, IMRT, MRI, CT, and PET-CT. He has participated in 16 international conferences, and is a member of 3 organizations.

Dr. Mehmet Volkan Aydin is a neurosurgeon with expertise in neuro-oncology, spinal surgery, trigeminal and hemifacial spasm surgery, Chiari malformation, and skull base disorders. He is skilled in microsurgery for brain, spinal cord, and nerve tumors. He also performs complex spinal procedures.

He earned his medical degree from Dokuz Eylül University. He completed his neurosurgery training at Çukurova University. Dr. Aydin continued his training with a fellowship at Oregon Health and Science University. He has served as Clinical Training and Administrative Supervisor at SBU Prof. Dr. Cemil Taşcıoğlu City Hospital Neurosurgery Clinic.

Dr. Aydin has published several articles in international peer-reviewed journals. His work focuses on neurosurgical techniques and rare case reports. He is dedicated to advancing neurosurgical science and patient care.

Dr. Gokhan Ertas is a Professor of Cardiology. He has broad experience in ischemic heart disease, cardiac arrhythmias, and heart failure. He specializes in advanced interventional cardiology procedures, including coronary angiography, stent placement, and percutaneous valve interventions such as TAVI and MitraClip. Dr. Ertas is skilled in both diagnostic and therapeutic techniques. These include 3D echocardiography, CT coronary angiography, and various cardiac catheterization methods.

Dr. Ertas earned his medical degree from Istanbul University Faculty of Medicine. He completed his cardiology residency at Kocaeli University. In 2020, he became a Professor of Cardiology. He has worked as a Cardiology Specialist and Chief Assistant in top hospitals in Turkey. Dr. Ertas also completed a research fellowship at the Thorax Center, ErasmusMC in the Netherlands.

Areas of Interests

• All skin, hair and nail diseases
• Aesthetic and cosmetic dermatological applications
• Dogol botox (wrinkle treatment, player botox)
• Sweating Botox
• Filling applications
• Stem cell therapies, exosome therapy
• Mesotherapy (hair and face mesotherapy, Paris glow)
• PRP
• Spot treatments
• Laser treatment applications
• Non-surgical skin rejuvenation
• Youth vaccinations
• Acne and acne scar treatment
• Eczema, seborrhoeic dermatitis, urticaria, allergic skin diseases, rosacea, psoriasis
• HPV, sexually transmitted diseases
• Cryotherapy, electrocauterisation, applications
• Nevus (mole) examination, follow-up and surgical mole removal
• Dermatological surgical procedures

Education:

• Mersin Hacı Sabancı Anatolian High School
• Mersin University Faculty of Medicine
• Çukurova University Department of Dermatological and Venereal Diseases

Experience:

• Liv Hospital Ulus

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.

Director of Radiotherapy Institute Oncology Division

Dr. Elif Afacan Yildirim is a medical specialist in rheumatologic dermatology. She co-authored a chapter in the book "Rheumatologic Dermatology," edited by Kenan Aydoğan.

Her work highlights advanced diagnostic methods such as histopathology, capillaroscopy, and fibroscan. These tools help in the accurate diagnosis and treatment of rheumatologic skin diseases. Dr. Yildirim’s knowledge supports better care in this field.

Duties:

1985 – 1986 Istanbul University Cardiology Institute, Department of Cardiovascular Surgery, General Practitioner

1986 – 1992, Istanbul University Cardiology Institute, Department of Cardiovascular Surgery, Assistant Professor

1993-2012 Vehbi Koç Vakfı Amerikan Hastanesi (Hospital), Department of Cardiovascular Surgery, Specialist Physician

2012-2017 İstanbul Medipol University, Department of Cardiovascular Surgery, Assistant Professor

2017 – 2019 İstinye University LIV Hospital, Department of Cardiovascular Surgery, Assoc. Prof.

2019 – 2024, Freelance Consultant Physician

2024 – Today, Istanbul Florence Nightingale Hospital, Department of Cardiovascular Surgery, Assoc. Prof.

Memberships in Scientific Organizations:

• Turkish Society of Cardiovascular Surgery
• Turkish Society of Pediatric Cardiology and Cardiac Surgery
• Turkish Society of Cardiology

Dr. Zvi Lidar is a renowned neurosurgeon and shoulder replacement orthopedic surgeon certified in Israel and the USA. He specializes in neurosurgery in adults and children and has authored 30+ scientific papers on spinal surgery. He is a member of the American Association of Neurological Surgeons, Israel Neurosurgical Society, Israel Medicine Association, Israel Spine Society, and North American Spine Society.

Dr. Sefik Igdem is a respected radiation oncologist with 37 years of experience. He is known for his skill in advanced cancer treatments. Dr. Igdem specializes in radiotherapy, intensity-modulated radiation therapy, 3D conformal radiation therapy, and image-guided radiotherapy. He focuses mainly on prostate cancer and head and neck cancers.

Dr. Igdem has played a key role in bringing new technologies and conformal treatments to radiation oncology. He has also completed a retrospective analysis of 600 postmenopausal breast cancer cases. This work shows his commitment to evidence-based care. His broad clinical experience and focus on innovation have made him a leader in his field.