Best Doctors in Turkey — Get an Online Consultation

Personal Information 

Sex:  Male

Born : 1968 

Professional Experience

Gayrettepe Florence Nigthingale Hospital

Medical Oncology Department

Besiktas/Istanbul/Turkey (ongoing)

Education:

He became Professor (22/April /2016)

Medical Oncology

Attending Phys.in Gastrointestinal Oncology (January 2005 ,2009)

Istanbul University Oncology Institue,

Department of Medical Oncology

Medical Oncology Fellowship (December 2001-December2004)

Istanbul University, Istanbul Medical Faculty

Hemodialysis Traning (May1996-January1997)

Istanbul University ,bCerrahpasa Medical Faculty

Internal Medicine Residency (November 1991-November 1996)

Istanbul University ,bCerrahpasa Medical Faculty

Ege University Medical Faculty (1985-1991)

Professional Experience

February 1999-November 2001

Metropolitan Florence Nigthingale Hospital

American Cancer Center, Gayrettepe/İstanbul

April1997- October 1998

Bayraktar Dialysis Center

Güngören/ Istanbul

Membership

Turkish Medical Oncology Association

ENET(European Neuroendocrine Tumour Society)

ESMO

ASCO

General Surgery Department 

Liver Transplantation 

Kidney Transplantation

Educational Information 

Master's Degree School of Medicine Çukurova University, School of Medicine 1996

 Ph.D./S. Qualification General Surgery Ankara Numune Training And Research Hospital 2001

Academic/Professional Experience 

Term General Practitioner Rize Fındıklı Central Health Center Spec. 1996-1997

 Ankara Numune Training And Research Hospital Ankara General Surgery Assist. Prof. 1997-2001 

Ankara Numune Training And Research Hospital Ankara General Surgery Spec. Prof. 2001-2002 

Ankara Numune Training And Research Hospital Ankara General Surgery Chief Assistant 2002-2007 

İnönü University Faculty of Medicine Malatya General Surgery Assoc. Prof. 2007-2010 

İnönü University Faculty of Medicine Malatya Surgical Oncology Minor Specialist 2012 

İnönü University Faculty of Medicine Malatya General Surgery Assoc. Prof. 2010-2015 

İnönü University Faculty of Medicine Malatya General Surgery Professor 2015-2017

Osmangazi University, School of Medicine Eskişehir Head of General Surgery-Surgical Oncology Department Professor 2017-Present

Education Abroad: 

1- As a National Cancer Institute Short-Term Scientist for 10 months, sentinel node applications and ductoscopy training in breast cancer, with the National Cancer Institute's Research Scholarship at Surgical Oncology Clinic, Magee-Womens Hospital of University of Pittsburgh Medical Center in the United States, 2008 (10 months) 

2- Transplantation and Oncology Surgery Training at the University of Giessen-Marburg, Germany, 2010 (1 month)

Master's Theses Managed (Activity List H) 

1- Keskin,K., “Evaluation of Operative Hyperthyroidism Patients with SF-36 Quality of Life Scale”, Ankara Numune Training and Research Hospital, 2003. 

2- Aydın,S., “Effects of TNFα Receptor Blocker (Infliximab) on Bacterial Translocation and Pancreatitis in Experimental Acute Necrotizing Pancreatitis”, Ankara Numune Training and Research Hospital, 2005. 

3- Arslan MŞ, Analysis of the Perspective of Organ Transplantation in a Geographical Region where Liver Transplantation is Extensively Performed (The Case of Malatya Province). 2018 

SCIENTIFIC STUDIES AND PUBLICATIONS 

Specialization thesis in medicine: 

The Relationship Between Breast Cancer and Thyroid Pathologies, 2001.

AWARDS 

Before Associate Professorship 

2003 Turkish Society of Surgery-Sanofi Pharma Thrombosis Research Foundation 7. Research Project Competition incentive award. “The importance of insulin resistance and VEGF-C in breast cancer lymph node metastasis: Prospective Clinical Study”. 

2005 Oral Presentation “Third Prize”. National Geriatrics Congress, Antalya. "Factors affecting mortality and morbidity in elderly patients with Fournier's Gangrene". 

2007 Oral Presentation “Second Prize”. National Breast Congress, Ankara. “Vascular endothelial growth factors; Is postmastectomy a risk factor for lymphedema?”. 

2008 AACR (American Association for Cancer Research) Scholar-in-Training Award. San Antonio Breast Cancer Symposium, USA. “The Predictive Probability of Four Different Breast Cancer Nomograms for Non Sentinel Axillary Lymph Node Metastasis in Positive Sentinel Node Biopsy”. 

2009 Pilot Grant Award. 6th International Symposium on the Intraductal Approach to Breast Cancer, Santa Monica, California, USA. “Autoflourescence Ductoscopy for the Early Detection of Breast Cancer”. 

During Professorship and Associate Professorship: 

2013 1000. Liver Transplant Outstanding Achievement Certificate. April 2013 

2013 Best poster presentation award “Massive Hemorrhage from Retropancreatic Portal Vein as a Complication of Thromboendovenectomy and Control with Balloon Catheter Tamponade during Liver Transplantation. 13. International Euroasian Congress of Surgery and Gastroenterology” Bucharest, Romania.  

MEMBERSHIP OF PROFESSIONAL ORGANIZATIONS 

Turkish Surgical Association 

Ankara Surgery Association 

Ankara Breast Diseases Association 

Federation of Breast Associations 

Association of Gastroenterology Surgery 

Edoscopic Laparoscopic Surgery 

Association American Society of Breast Cancer 

International Association of Surgeons, Gastroenterologists and Oncologists

 Surgical Oncology Association (Member of the Board of Directors)

Assoc. Prof. Ali Zirh is a world renowned neurosurgeon from Turkey. He was born on October 8, 1960 in Ankara, Türkiye and completed his primary and secondary education in the same city. He graduated from Ankara Atatürk High School with first place, and he entered the Hacettepe University Faculty of Medicine. He graduated from Hacettepe University Faculty of Medicine on August 31st, 1983 as a medical doctor. Between the years 1983 and 1985, he carried out his state service obligation in Gaziantep and was rewarded with a commendation by the Provincial Authority for his work in this period. He completed his military service in Istanbul in 1987 and was discharged.

In 1988, he started his specialization at Marmara University Faculty of Medicine, Department of Neurosurgery. In 1990, he attended the British Council in Glasgow and Edinburgh; the European Neurosurgery Association (EANS) in Warnemünde, Germany in 1989; Zaragoza, Spain in 1991; Jerusalem, Israel in 1992; Brudge, Belgium in 1993; and in 1994, he attended the World Neurosurgery Association (WFNS) training courses in Antalya, Turkey.

Glasgow Institute of Neurological Sciences in 1990, Department of Neurosurgery, University of Pittsburg in 1992, Department of Neurosurgery, University of Virginia in 1992, Department of Neurosurgery, University of Washington in 1992, Division of Neurosurgery, Toronto Western Hospital in 1994, Department of Neurosurgery, The Johns Hopkins Hospital in 1994 he visited and participated in clinical studies.

He became a neurosurgeon in February 1994. He completed his master's degree in neurophysiology at Marmara University Health Sciences Institute in March 1994. In September 1994, he completed the fifth of the European Neurosurgery Association's (EANS) training courses in Izmir, took the exams, and received his EANS diploma. On the same date, he participated in the European Board of Neurosurgery Primary Examination, passed successfully and certified.

In line with his field of interest, Stereotactic and Functional Neurosurgery, he attended training courses on "Stereotactic Target Calculation" and "Neurostimulation for Pain" in Çeşme İzmir in September 1994. "Stereotactic Neurosurgery Hands-On" in New-Orleans USA in November 1994, "Augmentitative Procedures for Pain" in San Francisco USA in October 1995, "Stereotactic Neurosurgery Hands" in New Orleans-USA in November 1995 , "Deep Brain Stimulation for Treating Parkinson's Disease" in Minneapolis-USA in May 1996, "Interventional Therapies Workshop: Implantable Spinal Cord Stimulation and Drug Infusion Systems" in Washington-USA in May 1996, "Surgical Treatment for Movement Disorders" and" Interventional Therapies in Chronic Pain Management" in Montreal-Canada in October 1996, "Management of Patients with Deep-Brain Stimulators, Expert Course and Workshop"  in Kiel-Germany in June 2001.

Dr. Ali ZIRH returned from the United States in 1997 and started to work at the VKV American Hospital, performing functional neurosurgery interventions and DBS insertion with the Microelectrode Recording and Stimulation technique at the single cell level, which is available in only a few centers in the world.

He started to work at Medicalpark Bahçelievler Hospital as of January 2009 and implemented these initiatives in a health institution where Social Security Institution patients could also benefit. He continues his surgical interventions at Medipol Bağcılar Hospital as of January 2015.

As of September 2018, he continues his academic and clinical studies at Medipol University's Parkinson's Disease and Movement Disorder Center (PARMER).

Over 30 years of clinical and surgical experience in the field of functional neurosurgery, more than 1900 surgical interventions for Parkinson’s and other movement disorder diseases and more than 1400 DBS surgeries that he has successfully performed, made Dr. Ali ZIRH the first name that comes to mind in movement disorder surgery in Turkey and the adjacent geography. He enabled the center where he performs these surgeries to become a Training and Reference Center in the international arena.

Dr. Ali ZIRH is a member of the Turkish Neurosurgery Association, Parkinson's Disease Association, European Society of Stereotactic and Functional Neurosurgery, American Academy of Advancement of Science, World Federation of Stereotactic and Functional Neurosurgery, International Association for the Study of Pain, American Pain Society, World Neuromodulation, American Neuromodulation Society, American Society of Stereotactic and Functional Neurosurgery, The Movement Disorder Society, American Association of Neurological Surgeons (AANS), and the Congress of Neurological Surgeons (CNS). At the international congresses and symposiums of these organizations held in different parts of the world at least 4-5 times a year, Dr. Zirh shares his experiences with other colleagues at these meetings, and also follows the progress and developments in his field of expertise day by day.

Dr. Ali ZIRH has many publications published in international journals, eight book chapters, more than 150 congress papers and various national / international awards.

General Surgery 

Colorectal Surgery 

Obesity and Metabolic Surgery 

Medical Director 

Brief Curriculum Vitae 

I was born in Trabzon on 15.07.1969. After I attended Ismetpaşa Primary School and Cumhuriyet Secondary School, I was graduated from Trabzon High School. I had medical education and training in School of Medicine of Karadeniz Technical University from 1986 to 1992. I worked as medical practitioner in Alacahan subdistrict, Kangal District, Sivas City in 1992-1993 and in Sivas Police Headquarters to fulfill the conscription. I was assigned as Health Group Manager and Medical Practitioner in Dernekpazarı District of Trabzon in 1993-1994. I passed the Examination for Medical Specialty in 1995 and I had my residency training and education at Department of General Surgery in Istanbul School of Medicine of Istanbul University from 1995 to 2000. I was awarded the title of “General Surgeon” after I submitted the medical specialty thesis titled “Relationship between gastrointestinal tumors and HLA” in 2001. After I worked at a privately owned hospital in 2000-2002, I started working in General Surgery Clinic of Bakırköy Dr. Sadi Konuk Training and Research Hospital in 2003. I had rotation in General Surgery Clinic of School of Medicine in Istanbul University for 9 months in 2007. I was awarded the title “Associate Professor of General Surgery” in 2010. I undertook Management duties in Şişli Hamidiye Etfal Training and Research Hospital from November 2012 to December 2013 and in Bakırköy Dr. Sadi Konuk Training and Research Hospital from December 2013 to April 2015. I had been Head of Education and Administrative Affairs, General Surgery clinic at Bakırköy Dr. Sadi Konuk Training and Research Hospital since 2010. I am Medical Director and General Surgeon at VM Medical Park Florya Hospital in Istanbul Aydın University as of 2017. 

I have intentionally dealt with renal transplantation during my residency education. After I was awarded the title “medical specialist”, I participated to diagnostic & therapeutic endoscopy, bariatric surgery, laparoscopy and robotic surgery educations abroad for short periods. I am intensively dealing with any and all laparoscopic surgical procedures (especially bariatric and gastrointestinal system surgery) and diagnostic and therapeutic endoscopic procedures (gastroscopy, colonoscopy, ERCP, endoscopic ultrasound) in this clinic since 2003 and I also play the role of trainer. I do and train others about General Surgery procedures with Da Vinci Robotic system since 2010. 

I authored 74 papers that are published in SCI and SCI-e journals and 55 papers that are published in local journals, along with 7 book chapters and 86 papers presented in local congresses and 180 papers presented in international congresses. 

I am member of Turkish Surgical Association, Turkish Association of Trauma and Emergency Surgery, Turkish Association of Endoscopic – Laparoscopic Surgery, Turkish Association of Obesity Surgery, Turkish Transplantation Centers Coordination Association and Istanbul Surgical Association. I am also member of International Active Member of Society of American Gastrointestinal Endoscopic Surgeons (SAGES), International Active Member of European Association for Endoscopic Surgery (EAES), International Active Member of International Association of Surgeons, Gastroenterologists, Oncologists (IASGO), International Active Member of International School of Surgical Oncology (ISSO), International Active Member of International Federation Surgical Obesity (IFSO). 

Date of Birth: July 15th, 1969 

Educational Status: 

Bachelor’s Degree School of Medicine Karadeniz Technical University 1992 

Medical Specialty Department of General Surgery, Istanbul School of Medicine İstanbul University 2001 

Title of Medical Specialty Thesis (abstract is attached) and Supervisor: 

1. “Relationship between gastrointestinal tumors and HLA”. February 2001 Supervisor: Prof. Uluğ Eldegez, M.D. 

General Surgeon Büyük Anadolu Hospital 2001-2003 

General Surgeon Bakırköy Dr Sadi Konuk Training and Research Hospital 2003-2006 

General Surgeon Istanbul University Emergency Surgery Clinic, Department of General Surgery, Istanbul School of Medicine 2006-9 months 

General Surgeon Bakırköy Dr Sadi Konuk Training and Research Hospital 2006-2010 

Associate Professor of General Surgery Bakırköy Dr Sadi Konuk Training and Research Hospital 2010-…

Head of Training and Administrative Affairs, General Surgery Clinic Bakırköy Dr Sadi Konuk Training and Research Hospital 2010 - …

 Doctorate thesis / proficiency in art studies supervised: 

1. Ede, B., “Changes in Thyroid Hormones After Thyroid Surgery”, Bakırköy Dr Sadi Konuk Training and Research Hospital 2006. 

2. Dodur B., “Factors Influencing Mortality and Morbidity in Gastrointestinal Bleeding” Bakırköy Dr Sadi Konuk Training and Research Hospital 2006. 

Duties undertaken in Projects: 

1. “Enteral Stents for Colonic Obstructions (ESCO): Prospective, randomized European multisentric study, comparing enteral stent followed by elective surgery versus emergency surgical treatment in malignant colonic obstruction. “ European Association for Endoscopic Surgery (EAES) Clinical Trial Center (CTC) Clinical Trial gov. Identifier: NCT00591695 

2. A phase III, randomized, double-blind, parallel group efficiency and safety study that compares safety and efficiency of oral dabigatran etexilate (150 mg BID) with warfarin (INR = 2.0-3.0) in semiannual treatment of acute symptomatic thromboembolism following initial treatment with a parenteral anticoagulant agent, which is approved for the relevant indication, minimum for five days – RECOVER II” Protocol code 1160.46

Editorialships: 

1. General Surgery Department, Advisory Board, Turkish Clinics Medical Sciences Journal, 2010 

2. “Global Journal of Surgery” Editorial Board 2010 

Scientific Organization Memberships: 

1. Turkish Surgical Association 

2. Association of Trauma and Emergency Surgery 

3. Turkish Association for Endoscopic and Laparoscopic Surgery 

4. Turkish Obesity Surgery Society 

5. Organ Transplantation Centers Coordination Association 

6. Istanbul Surgical Association 

7. International Active Member of Society of American Gastrointestinal Endoscopic Surgeons (SAGES). 

8. International Active Member of European Association for Endoscopic Surgery (EAES) 

9. International Active Member of International Association of Surgeons, Gastroenterologists, Oncologists (IASGO). 

10. International Active Member of International School of Surgical Oncology (ISSO). 

11. International Active Member of International Fedaration Surgical Obesity (IFSO)

Prof. Dr. Ali Vefa YÜCETÜRK was born in Aydın in 1963. He graduated from Hakimiyetimilliye Primary School in 1974, Izmir Private Turkish High School in 1980, and graduated from Ege University Faculty of Medicine in 1986.

After completing his compulsory service at Adıyaman's Çelikhan District Health Center in 1986-89, he specialized in Ear Nose and Throat Diseases at Karadeniz Technical University Faculty of Medicine between 1989-92 and worked in the same clinic as a specialist until 1994. KKK in 1993. He did his military service at Izmir Military Hospital.

He started working as an ENT faculty member at Celal Bayar University Faculty of Medicine in 1994, and became an associate professor in 1999 and a professor in 2005.

In 1996, he carried out studies and research on larynx and parotid surgery at the ENT Clinic of the University of Ferrara, Italy, with Prof. Dr. Carlo Calearo and Prof. Dr. Antonio Pastore.

He is a member of the Turkish Otorhinolaryngology and Head and Neck Surgery Association and the Laryngology Association.

He supervised four theses on laryngeal cancer, inner ear hearing loss and snoring-sleep apnea.

He participated in more than 40 congresses, courses and meetings at home and abroad as a speaker and participant.

He has 18 scientific articles published in international and 31 national journals, 11 international and 35 papers presented in national meetings, and 5 copyrighted book chapters. In particular, his studies on snoring, obstructive sleep apnea, voice diseases, laryngeal cancer and ear microsurgery have been at the forefront.

Education and Expertise 

2012 – Atatürk University Faculty of Medicine – Medical education 

2017 -- University of Health Sciences Istanbul Prof. Dr. N. Reşat Belger Beyoğlu Eye Training and Research Hospital – Specialization 

Courses and Certificates 

TOD 52nd National Congress Cataract and Refr. Surgery BİLEP course 

TODEM Glaucoma Surgery Skill Transfer Program-3 course 

Professional Memberships 

Turkish Medical Association 

Turkish Ophthalmology Association

Articles published in international peer-reviewed journals: 

A1. Changes in Higher-Order Aberrations After Phototherapeutic Keratectomy for Subepithelial Corneal Infiltrates After Epidemic Keratoconjunctivitis (Kepez Yildiz B, Urvasizoglu S, Yildirim Y, Agca A, K Besek N, Fazil K, Eris E, Aygit ED,Taskapili M,Demirok A.) cornea 2017 Oct;36(10):1233-1236. doi: 10.1097/ICO.000000000000129 

A2. Comparison of three methods of tonometry in normal subjects: Goldmann applanation tonometer, non-contact airpuff tonometer, and Tono-Pen XL(Yilmaz I, Altan C, Aygit ED, Alagoz C, Baz O, Ahmet S, Urvasizoglu S, Yasa D, Demirok A Clin Ophthalmol 2014 Jun 7;8:1069-74.doi:10.2147/OPTH.S6391. 

Papers presented at international scientific meetings and published in the proceedings book 

B1. Berna Basarir1, Banu Satana*1, Cigdem Altan1, Semih Urvasizoglu1, Funda Ebru Onmez1, Isil Pasaoglu1, Gamze Ozturk-Karabulut1, Ferah Ozcelik1 " EFFICACY OF TRABECULECTOMY WITH MITOMYCIN-C IN THE MANAGEA GLASS UVEITIS ” Poster notification ( P-FS-349 ), Helsinki, Finland, JuneJuly

Papers presented at national scientific meetings and published in proceedings books:

 C1.S.Urvasızoğlu,Z.Alkın,A.Özkaya,C.Alagöz,Ç.Altan,K.Yüksel,AT.Yazıcı,A.Demirok, “47. "Effectiveness of topical nevanac use in the treatment of acute central serous chorioretinopathy" in the booklet of the "National Turkish Ophthalmology Congress" Poster report (PS-0796), Antalya, Turkey, November, 2013 

C2.S.Urvasızoğlu,Y.Özpınar,İ.Tanır,Y.Yıldırım,A.Ağca,T.Saıcı,Y.Ş.Göker,A.Demirok in the proceedings booklet of the 48th National Turkish Ophthalmology Congress “Femtosecond laser with intracorneal ring placement results” Poster notification (PS-0165), Antalya, Turkey, November, 2014 

C3. S.Urvasızoğlu,Y.Özpınar,İ.Tanır,E.Bozkurt “Effect of Nd-YAG laser posterior capsulotomy on anterior chamber depth” in the proceedings booklet of the 48th National Turkish Ophthalmology Congress Poster report (PS-0456), Antalya, Turkey, November, 2014 

C4. İ.Tanır,Y.Özpınar,U.Ürdem,M.Altun, S.Urvasızoğlu, A.Demirok "Comparison of anterior chamber depth measurement of SIRIUS and ORBSCAN devices" in the proceedings booklet of the 48th National Turkish Ophthalmology Congress Poster report (PS-0185), Antalya, Turkey, November, 2014 

C5. M.Özveren,K.Yüksel,Kİ.Çankaya, A.Özkaya ,M.Toğaç, MC.Öcal, U.Çiçek, S.Urvasızoğlu, G.Demir,S.Ahmet,AT.Yazıcı,A.Demirok 48th National “Success and complications of pneumatic retinopexy application in the treatment of rhegmatogenous retinal detachment” in the Turkish Ophthalmology Congress proceedings booklet, Poster report (PS-1233), Antalya, Turkey, November, 2014 

C6. Semih Urvasızoğlu, Burçin Kepez Yıldız, Yusuf Yıldırım, Alper Ağca, Ahmet Demirok, Muhittin Taşkapılı Effect of Treatment of Corneal Subepithelial Infiltrals with Sequelae of Adenoviral Keratoconjunctivitis with Phototherapeutic Keratectomy on Corneal High Row Aberrations Poster presentation [PS-0592] 2016 November-TOD 50th National Congress 

C7. Yusuf Yıldırım, Semih Urvasızoğlu, Burçin Kepez Yıldız, Alper Ağca, Ahmet Demirok, Muhittin Taşkapılı Visual and refractive results of the treatment of granular corneal dystrophies with phototherapeutic keratectomy Poster presentation [PS-0286] 2016 November-TOD 50th National Congress 

C8. Semih Urvasızoğlu, Zeynep Alkın, Ali Demircan, Dilek Yaşa, Cengiz Alagöz, Ayşe Çiğdem Altan, Ahmet Demirok “The Effect of Prognostic Factors in Chronic Central Serous Chorioretinopathy on Visual and Morphological Results After Half Fluens Photodynamic Therapy” in the 51st National Turkish Ophthalmology Congress proceedings booklet. Poster notification ( PS-0800), Antalya, Turkey, October, 2017 

C9. Semih Urvasızoğlu, Gökhan Demir, Gizem Kutlutürk, Cengiz Alagöz, Dilek Yaşa, Sarıye Taşkoparan, Gürkan Erdoğan, Ahmet Demirok “Our 23 Gauge Pars Plana Vitrectomy Results Performed for Secondary Retinal Detachment” in the proceedings booklet of the 51st National Turkish Ophthalmology Congress Poster notification (PS- 1064), Antalya, Turkey, October , 2017 

Domestic 

C10. Zeynep Alkın, Semih Urvasızoğlu, Dilek Yaşa, Cengiz Alagöz, Çiğdem Altan, Ahmet Demirok Oral presentation of “The Effect of Prognostic Factors in Chronic Central Serous Chorioretinopathy on Relapse After Half-Fluens Photodynamic Therapy” in the proceedings booklet of the 51st National Turkish Ophthalmology Congress (SS-TR-57), Antalya, Turkey, October , 2017

Dentist Berat Can Palazoğlu was born in Ordu in 1996. He completed his primary, secondary, and high school education in his hometown of Ordu, demonstrating early on a commitment to his studies and a passion for healthcare. In 2020, he graduated from the prestigious Ankara University Faculty of Dentistry, where he honed his skills and knowledge in dental care. Following his graduation, he joined the Avangart Dental Clinic family, where he currently serves his patients with dedication and expertise, striving to provide the highest quality dental care and ensure the best outcomes for their oral health.

Education:

Medical Degree (MD): Cukurova University, 200

Specialization Training and Experience:

Specialization Degree in General Surgery: Inonu University Medical Faculty General surgery  2011 Fellowship: Gastroenterological Surgery, Turkey High Specialization Hospital, 2013

 Career:

Associate Professorship: Gastroenrology  Surgery, İnönü University, 2017

 Professorship: General Surgery, Medipol University, 2024

Dr. Ayan graduated from Medical School in 1991 and completed his urology education in 1997. At the beginning of his carrier, he was a post doctorate research fellow at the Department of Urology of Harvard Medical School, Children’s Hospital in Boston (1999-2000). He studied the effect of partial ureteral obstruction to the kidney in early developmental stage in an experimental animal fetus model. This study provided a significant contribution to a complicated issue of pediatric urology and was cited many times by its successors. 

He became associate professor of urology in 2004 and was appointed as a professor of urology in 2009. He was accepted as a clinical fellow in Minimal Invasive Urologic Oncology at the Department of Surgery, Section of Urology at the University of Chicago (2014-2015). He worked in an intense oncology program mainly concentrated on robotic surgery of prostate and kidney cancer. Because of this background, he is mainly interested in urologic oncology and pediatric urology. The primary portion of his daily practice consist of kidney cancer, prostate cancer, bladder cancer, neonatal hydronephrosis, ureteropelvic junction obstruction, urine reflux to kidney, hypospadias and undescended testis. 

Because of its prevalence in Turkey, Prof. Ayan has a huge experience with urinary stone disease and he is doing large number of endoscopic and percutaneous surgeries for kidney, ureter and bladder stones. 

Prof. Ayan holds United States Medical License and European Board of Urology Certificate. He is a member of AUA, EAU and Turkish Urologic Surgery and Urologic Oncology Societies. 

List of International Scientific Publications; 

1. Ayan S, Yildirim S, Ucar C, Sarioglu Y, Gültekin EY, Butuner C. Corporal reactivity to adenosine and prostaglandin E1 in alloxan-induced diabetic rabbit corpus cavernosum and the effect of insulin therapy. BJU Int, 83: 108-12, 1999. 

2. Yildirim S, Ayan S, Sarioglu Y, Gültekin EY, Butuner C. The effects of long-term oral administration of L-arginine on the erectile response of rabbits with alloxan-induced diabetes. BJU Int, 83: 679-85, 1999. 

3. Ayan S, Kaloglu C, Gökce G, Kılıcarslan H, Gültekin EY. Effect of insulin therapy to diabetic cystopathy: urodynamic and histological findings in a rabbit model. Sc J Urol Nephrol, 33: 392-5, 1999. 

4. Yildirim S, Ayan S, Sarioglu Y, Gültekin Y, Uma S. Does diabetes mellitus affect the progress of tolerance to isosorbide dinitrate (ISDN) in corporal tissue? Nitric Oxide: Biology and Chemistry, 4: 29- 34, 2000. 

5. Ayan S, Sarioglu Y, Yildirim S, Gokce G, Bagcıvan I. Relaxation induced by omeprazole does not change in diabetic rabbit corpus cavernosum. BJU Int, 87(3):265-8, 2001. 

6. Ayan S, Gokce G, Kılıcarslan H, Kaya K, Gultekin EY. An unusual cause of urinary incon tinence: urethral coitus. Sc J Urol Nephrol, 35:254, 2001. 

7. Yildirim S, Simsek R, Ayan S, Gokce G, Sarıoğlu Y, Safak C. Relaxant effect of some benzothiazolinone dervatives on isolated rabbit corpus cavernosum. Urol Res, 29:182-5, 2001. 

8. Ayan S, Roth JA, Freeman MR, Bride SH, Peters C. Partial ureteral obstruction dysregulates the RAS in the fetal sheep. Urology, 58: 301-6, 2001. 

9. Kılıcarslan H, Ayan S, Gokce G, Kaya K, Gultekin EY. Cranial blind ending branch of a bifid ureter. Int Urol Nephrol, 32: 635-6, 2001. 

10. Gokce G, Kılıcarslan H, Ayan S, Yıldız E, Kaya K, Gultekin EY. Adenomatoid tumors of testis and epididym: a report of two cases. Int Urol Nephrol, 32:677-80, 2001. 

11. Ayan S, Gokce G, Kılıcarslan H, Ozdemir O, Yildiz E, Gultekin EY. K-RAS mutation in transitional cell carcinoma of urinary bladder. Int Urol Nephrol, 33:363-67, 2001. 

12. Bulut HE, Onarlıoglu B, Kaloglu C, Özdemir Ö, Ayan S. Effects of experimental diabetes and insulin treatment on rabbit renal morphology: a quantitative and qualitative study. Turk J Med Sci, 31: 209-16, 2001. 

13. Kılıcarslan H, Gokce G, Ayan S, Gultekin EY, Arıkan Y, Hocaoglu S. Fournier’s gangrene: a report of 20 cases. T Klin J Med Res 19:55-58, 2001. 

14. Gokce G, Kılıcarslan H, Ayan S, Tas F, Akar R, Kaya K, Gultekin EY. Genitourinary tuberculosis: A review of 174 cases. Scand J Infect Dis, 34: 338-40, 2002. 

15. Kilicarslan H, Yildirim S, Bagcivan I, Ayan S, Sarac B, Sarioglu Y. Effect of chronic renal failure (CRF) on purinergic responses of corpus cavernosal smooth muscle in rabbits. BJU Int 90(6):596-600, 2002. 

16. Bagcivan I, Gokce G, Ayan S, Yildirim S, Sarac B, Kilicarslan H, Sarioglu Y. Hydrogen-potassium ATPase inhibitors induce relaxation on rabbit prostatic strips in vitro.Int J Urol.;9(11):641-4; discussion 645, 2002. 

17. Bagcivan I, Kilicarslan H, Sarac B, Gokce G, Yildirim S, Ayan S, Sarioglu Y. The evaluation of the effects of renal failure on erectile dysfunction in a chronic renal failure (CRF) rabbit model. BJU Int.;91(7):697-701, 2003 

18. Kilicarslan H, Guvenal T, Ayan S, Gokce G, Cetin A, Gultekin Y. Comparison of outcomes of three different surgical techniques performed for stress urinary incontinence. Int J Urol.;10(3):126- 30, 2003. 

19. Kaya S, Poyraz O, Gökçe G, Kılıçarslan H, Kaya K and Ayan S. Role of Genital Mycoplasmata and Other Bacteria in Urolithiasis. Scand J Infect Dis, 35:315-317,2003. 

20. Kilicarslan H, Gokce G, Ayan S, Atalar M, Kaya S, Kaya K, Gultekin Y. A case of hydatid disease: urinary retention due to isolated retrovesical hydatid cyst in a boy. Scand J Infect Dis, 35 :408-410, 2003. 

21. Gokce G, Kaya K, Kılıcarslan H, Tas F, Ayan S, Yıldız E, Gultekin E Y. Epidermoid cyst in the renal pelvis. Int Urol Nephrol;35(1):9-10, 2003. 

22. Kilicarslan H, Gokce G, Ayan S, Guvenal T, Kaya K, Gultekin EY. Predictors of outcome after in situ anterior vaginal wall sling surgery. Int Urogynecol J Pelvic Floor Dysfunct ;14(5):339-41, 2003. 

23. Kilicarslan H, Gokce G, Kaya K, Ayan S, Gultekin YE. Surgical treatment of penil fractures. Ulus Travma Derg.;9(1):54-6, 2003. 

24. Yildiz E, Gokce G, Kilicarslan H, Ayan S, Goze F, Gultekin EY. Prognostic value of the expression of Ki-67, CD44 and vascular endothelial growth factor, and microvessel invasion, in renal cell carcinoma. BJU Int. 2004 ;93(7):1087-93. 

25. Gokce G, Topsakal K, Ayan S, Kilicarslan H, Gokce SF, Gultekin EY. Case report: Nonobstructive giant urethral stone with two safety pins. Int Urol Nephrol. 2004;36(1):65-6. 

26. Kaya K, Ayan S, Gokce G, Kılıcarslan H, Yildiz E, Gultekin EY. Urinary nuclear matrix protein 22 for diagnosis of renal cell carcinoma. Scand J Urol Nephrol. 38 :1-5,2004. 

27. Ayan S, Kaya K, Topsakal K, Kılıçarslan H, Gokce G, Gültekin Y. Efficacy of tolterodine as a firstline treatment for non-neurogenic voiding dysfunction in children. BJU Int. 96(3):411-4, 2005. 

28. Kaya K, Gokce G , Kaya S, Kilicarslan H, Ayan S, Gultekin EY. Isolated renal and retropertoneal hydatid cysts: a report of 23 cases. Trop Doct. 2006 Oct;36(4):243-6. 

29. Candan F, Ayan S, Tas F, Gokce G, Elagoz S. Spontaneous renal laceration as the presenting feature of polyarteritis nodosa in a patient with familial Mediterranean fever after hepatitis A infection. Rheumatol Int, 25(6):475-7, 2005. 

30. Silig Y, Pinarbasi H, Gunes S, Ayan S, Bagci H, Cetinkaya O. Polymorphisms of CYP1A1, GSTM1, GSTT1, and prostate cancer risk in Turkish population. Cancer Invest, 24(1):41-5, 2006. 

31. Tanzer F, Ozgur A, Bardakci F, Cankorkmaz L, Ayan S. Analysis of a 1-year-old cystinuric patient with recurrent renal stones. Int J Urol. 13(10):1347-9, 2006. 

32. Kilicarslan H, Ayan S, Vuruskan H, Gokce G, Gultekin EY.Treatment of detrusor sphincter dyssynergia with baclofen and doxazosin. Int Urol Nephrol. 2006;38(3-4):537-41. 

33. Ayan S, Topsakal K, Gokce G, Gultekin EY.Efficacy of combined anticholinergic treatment and behavioral modification as a first line treatment for nonneurogenic and nonanatomical voiding dysfunction in children: a randomized controlled trial. J Urol. 2007 Jun;177(6):2325-8; discussion 2328-9. 

34. Ozdemir O, Gul E, Kilicarslan H, Gokce G, Beyaztas FY, Ayan S, Sezgin I.SRY and AZF gene variation in male infertility: a cytogenetic and molecular approach. Int Urol Nephrol. 2007;39(4):1183-9. 

35. Yildiz E, Ayan S, Goze F, Gokce G, Gultekin EY. Relation of microvessel density with microvascular invasion, metastasis and prognosis in renal cell carcinoma. BJU Int. 2008 Mar;101(6):758-64. 

36. Kenan Kaygusuz, Gokhan Gokce, Iclal Ozdemir Kol, Semih Ayan and Sinan Gursoy. Efficacy of Preventive Analgesia with Tramadol or Lornoxicam for Percutaneous Nephrolithotomy: A Prospective, Randomized, Double-Blind, Placebo-Controlled Study. Current Therapeutic Research 68(4), 205-216, 2007. 

37. Kaygusuz K, Gokce G, Gursoy S, Ayan S, Mimaroglu C, Gultekin Y.A comparison of sedation with dexmedetomidine or propofol during shockwave lithotripsy: a randomized controlled trial. Anesth Analg. 2008 Jan;106(1):114-9. 

38. Gokce G, Karboga H, Yildiz E, Ayan S, Gultekin Y. Effect of angiotensin-converting enzyme inhibition and angiotensin II type 1 receptor blockade on apoptotic changes in contralateral testis following unilateral testicular torsion. Int Urol Nephrol. 2008;40(4):989-95. 

39. Ozdemir, O (Ozdemir, Oztuerk); Yildiz, E (Yildiz, Esin); Ayan, S (Ayan, Semih); Gul, E (Gul, Eylem)1; Gokce, G (Gokce, Goekhan); Yildiz, F (Yildiz, Fazilet)1; Koksal, B (Koksal, Binnur)1; Goze, F (Goze, Fahrettin); Gultekin, EY (Gultekin, E. Yener). Epigenetic alterations and oncogenes mutations in urinary bladder carcinomas.CHROMOSOME RESEARCH. 2009, Volume: 17 Supplement: 1 Pages: 171-171 

40. Eskicorapci SY, Türkeri L, Karabulut E, Cal C, Akpinar H, Baltaci S, Baykal K; Turkish Validation Study Group of Kattan Preoperative Nomogram, Kattan MW, Ozen H. Collaborators: Yildirim A, Yazici S, Divrik RT, Ozkardeş H, Koşan M, Kurtuluş FO, Büyükalpelli R, Mungan A, Lekili M, Sahin H, Günlüsoy B, Ayan S, Bozlu M. Validation of two preoperative Kattan nomograms predicting recurrence after radical prostatectomy for localized prostate cancer in Turkey: a multicenter study of the Urooncology Society. Urology. 2009 Dec;74(6):1289-95. 

41. Ozdemir O, Yildiz S, Ayan S, Gül E, Gokce G, Yildiz F, Koksal B. Promoter hypermethylation of tissue specific tumor supressor genes and point mutation in K-ras, c-myc proto-oncogenes in urinary (transitional cell) bladder carcinoma. Health. 2010; 2(8):850-856. 

42. Türkeri L, Tanıdır Y, Çal Ç, Özen H, Şahin H; Collaborators :Kaya C, Karaman İ, Şengör F, Alkibay T, Sözen S, Büyükalpelli R, Can C, Kuyumcuoğlu U, Albayrak S, Abay E, Soyupak B, Tansuğ Z, Fazlıoğlu A, Gültekin Y, Ayan S, Gümüş E, Lekili M, Dillioğlugil Ö, Özer G, Uygur C, Akpınar H. Comparison of the efficacy of single or double intravesical epirubicin instillation in the early postoperative period to prevent recurrences in non-muscle-invasive urothelial carcinoma of the bladder: prospective, randomized multicenter study. Urol Int. 2010;85(3):261-5. 

43. Kuzgunbay B, Yaycioglu O, Soyupak B, Atay Kayis A, Ayan S, Yavascaoglu I, Cal C, Beduk Y; Turkish Study Group of Public Awareness in Testicular Cancer Public awareness of testicular cancer and self-examination in Turkey: A multicenter study of Turkish Urooncology Society.Urol Oncol. 2011 Mar 22. Epub ahead of print] 

44. Biçer H, Korgali E, Gökçe G, Ayan S, Yıldırım S, Gültekin EY. Contractile responses of urinary bladder in an experimental model of chronic renal failure. Bosn J Basic Med Sci. 2012 Nov;12(4):219- 23. 

45. Yaycioglu O, Eskicorapci S, Karabulut E, Soyupak B, Gogus C, Divrik T, Turkeri L, Yazici S, Ozen H; Society of Urooncology Study Group for Kidney Cancer Prognosis. A preoperative prognostic model predicting recurrence-free survival for patients with kidney cancer. Jpn J Clin Oncol. 2013 Jan;43(1):63-8. 

46. Erden Y, Korgalı E, Dundar G, Ayan S, Gokce G, Yildirim S, Gultekin EY. In-vitro effects of PDE5 inhibitor and statin treatment on the contractile responses of experimental MetS rabbit's cavernous smooth muscle. Arch Ital Urol Androl. 2014 Mar 28;86(1):33-8.

Personal information

Title: Professor Doctor

Branch: Radiation Oncology

Work History:

1 GATA Military Medical Faculty

2 Gayrettepe Florence Nightingale Hospital

3 T.R. Demiroğlu Bilim University \ Associate Professor

4 T.R Demiroğlu Bilim University \ Professor

Medical Specialties and Subspecialties:

1 Head and Neck Cancers

2 Radiation Oncology

Priority treatments:

1 Prostate cancer

2 Conformal treatments

Special advanced health technologies:

1 Truebeam Stx Technology

2 Halcyons

Education

1991 - Istanbul University Istanbul Faculty of Medicine

1996 - Istanbul University Cerrahpaşa Faculty of Medicine Radiation

Oncology Specialization Training