Best urologists in Turkey: TOP 132 doctors

Dr. Ilker Comez is a specialist in Urology with a focus on High-Intensity Focused Ultrasound (HIFU) for prostate cancer treatment and laparoscopic simple prostatectomy (LSP). He is known for his proficiency in various surgical techniques, including the transvesical and retropubic transcapsular (Millin) technique, and both extraperitoneal and transperitoneal approaches for LSP. Dr. Comez has made substantial contributions to the literature on LSP, exploring its benefits, conflicts, and surgical techniques. His professional practice is marked by a commitment to improving lower urinary tract symptoms (LUTS) and reducing residual volume, while also minimizing cost and complications for patients.

Dr. Ersan Eroglu is an Associate Professor and general surgery specialist. He has served at Memorial Bahçelievler Hospital since 2018. He has been an Assistant Professor at Istanbul Bilim University since 2014. He also lectures at Istanbul Arel University since 2023. He earned his MD from Fırat University. He completed his general surgery residency at Haydarpaşa Numune.

He has authored 16 scientific articles. He has 25 national and 3 international congress presentations. He won First Prize in Turkey for laparoscopic right hemicolectomy in ileocecal neuroendocrine tumors. He contributed a translation to the SAGES Hernia Repair Manual (laparoscopic TEP/TAPP). He is a member of the Turkish Medical Association, the Turkish Surgical Society, and the Colon and Rectal, Bariatric and Metabolic, and Endocrine Surgery societies.

• 2017 - Currently, İstanbul/İstanbul/Turkey
  MEMORIAL ATAŞEHİR HOSPITAL
  Urology Specialist
• 2012 - Currently, İstanbul/İstanbul/Turkey
  ISTANBUL MEDEDNİYET UNIVERSITY MEDICAL FACULTY
  Urology - Head of Department
• 2010 - 2012, İstanbul/İstanbul/Turkey
  HAYDARPAŞA NUMUNE EDUCATION AND RESEARCH HOSPITAL
  Chief Physician
• 2010 - 2012, İstanbul/İstanbul/Turkey
  HACETTEPE UNIVERSITY MEDICAL FACULTY
  Urology Department - Lecturer of Department
• 2005 - 2012, İstanbul/İstanbul/Turkey
  GÖZTEPE EDUCATION AND RESEARCH HOSPITAL
  Urology Clinic Director
• 1999 - 2005, İstanbul/İstanbul/Turkey
  ŞİŞLİ ETFAL TRAINING AND RESEARCH HOSPITAL
  Urology Clinic Assistant Director
• 1992 - 1998, İstanbul/İstanbul/Turkey
  BEZMİ ALEM VALİDE SULTAN EDUCATION AND TRAINING HOSPITAL
  Urology Clinic Head Assisstant

Çağdaş Gökhun Özmerdiven

Education

Dr. Lecturer. Çağdaş Gökhun Özmerdiven, after completing his pre-undergraduate education, successfully completed his medical education at Trakya University Faculty of Medicine and received the title of Medical Doctor. He completed his specialization at Uludağ University Faculty of Medicine and became a Urology specialist.

Fields of Study and Interests

Male infertility (varicocele, in vitro fertilization, azoospermia), Prostatin laser surgery, Holmium Laser Lithotripsy (Bloodless, Incisionless Kidney Stone Surgeries)

Areas Of Interest

Urooncology 

Robotic Urology and Endourology 

Laser Technologies and Laser Prostate Surgeries (HoLEP, ThuFLEP) 

MRI Transrectal/Transperineal Ultrasonography Prostate Fusion Biopsy 

Endoscopic Stone Surgery 

Education 

Gulhane Military Medical Academy 

Experience 

Liv Ulus Hospital 

Kolan International Hospital 

Gülhane Education and Research Hospital 

Gulhane Military Medical Faculty 

University of Health Sciences, Gülhane Faculty of Medicine 

Memberships 

Turkish Urological Association 

Society of Endourology 

European Society of Urology (EAU) 

American Urological Association (AUA) 

World Society of Endourolog

Dr. Ugur Boylu is a Professor of Urology. He is known for his skills in Robotic Surgery, Urological Oncology, and Endourology. He treats urological cancers and performs minimally invasive procedures. Dr. Boylu has played a key role in improving techniques in his field.

He has written 72 scientific papers and presented 193 congress abstracts. He has also contributed to 20 books. His work has received over 1,150 citations, and his h-index is 19. Dr. Boylu is accredited by the Turkish Urology Association and the European Association of Urology.

Dr. Kemal Raşa is a highly experienced General Surgeon specializing in Modern Thyroidology & Laparoscopic Surgery with 23 years of experience. He is affiliated with several medical associations and has published several papers in his field.

In his professional career, Dr. Sarıer began working as a urology specialist at Özel Antalya Yaşam Hospital from 2005 to 2008, and then served at Gümüşsuyu Asker Hospital between 2008 and 2009. Since 2009, he has been employed at Medical Park Antalya Hospital, where he received the title of associate professor in 2020. Additionally, he served as a faculty member in the Department of Urology at Altınbaş University Faculty of Medicine from 2016 to 2017, and has been continuing his academic career as a faculty member in the Department of Urology at İstinye University Faculty of Medicine since 2021.

Education and Specialization

• Bachelor’s & Master’s Degree: Akdeniz University Faculty of Medicine, 1990 /1996
• Ph.D. / Medical Specialization: Urology, Akdeniz University, 1997/2002
• Associate Professor / Professor: Urology, Harran University, 2012/ 2013
• Professor: Urology, Istanbul Gelişim University, Faculty of Health Sciences, 2019/ 2023

Professional Experience

• Research Assistant: Akdeniz University Faculty of Medicine, Department of Urology, Antalya (1997/ 2002)
• Urology Specialist: Akdeniz University Faculty of Medicine, Department of Urology, Antalya (March 2002 / October 2002)
• Lecturer: Harran University Faculty of Medicine, Department of Urology, Şanlıurfa (2003/ 2006)
• Assistant Professor: Harran University Faculty of Medicine, Department of Urology, Şanlıurfa (2006 / 2010)
• Associate Professor: Harran University Faculty of Medicine, Department of Urology, Şanlıurfa (2012 /2013)
• Associate Professor: Ministry of Health Antalya Training and Research Hospital, Urology Clinic, Antalya (2013 /2018)
• Associate Professor: Memorial Antalya Hospital, Urology Clinic, Antalya (2018 /2019)
• Professor: Memorial Antalya Hospital, Urology Clinic, Antalya & Istanbul Gelişim University, Faculty of Health Sciences (2019/ 2023)
• Professor: Medical Park Antalya Hospital Complex (2023 / Present)

International Experience

• Berlin University, Charité Hospital – Fellowship in Urology (February 1 - March 31, 2006, Berlin, Germany)
• Akdeniz University Faculty of Medicine, Urology Clinic – Postgraduate Education in Laparoscopic Surgery by Endourology Association (May 1 - June 12, 2008, Antalya, Turkey)

Memberships in Scientific Organizations

• Turkish Urology Association
• Turkish Andrology Association
• Turkish Endourology Association
• Turkish Medical Association
• European Association of Urology
• Endourological Society
• Urological Surgery Association
• Eurasian Urooncology Association
• Turkish Pediatric Urology Association
•  
• TÜYK Competency Certificate
• "Recent Advances in Laparoscopic Urology" & "Urodynamics and Neuro-Uropharmacology" (October 8, 2000, Izmir)
• IRCAD Advanced Laparoscopic Urology Course Certificate (February 13-15, 2008)
• Laparoscopic Training Program Certificate (Endourology Association, 2008, Antalya)
• Experimental Animal Usage Certificate (January 26 - February 4, 2009)

Dr. Ozkan Onuk is a skilled urologist with expertise in urooncology, endourology, female urology, andrology, laparoscopic surgery, pediatric urology, and incontinence. He is known for performing complex procedures such as nephrectomy, robotic da Vinci prostatectomy, bladder removal, and vasectomy.

Dr. Onuk earned his medical degree and MSc from Istanbul University Faculty of Medicine. He completed his Ph.D. in Urology at Taksim E.A.H. In 2020, he became an Associate Professor at New Century University. He has a strong academic background and extensive surgical experience, especially in minimally invasive and robotic urological surgeries.

PhD. Sökmen graduated from Eskişehir Kılıçoğlu High

School in 2002 and studied at Istanbul Cerrahpaşa

University Medical School in the same year,

graduating in 2008.

Later, he specialized in urology at Bakırköy Urology

Clinic of Dr. Sadi Konuk Training and Research

Hospital was the only clinic in Turkey with European

Accreditation (FEBU) accreditation at the time and

was appointed as Urology Specialist in 2014.

Since becoming a specialist, he has actively

participated in trainings and conferences in the fields

of urological oncology, robotic surgery, renal

transplantation and andrology, and has participated in

numerous surgeries with leading professors from

around the world.

In recent years, he has become particularly interested

in “men’s sexual health and sexual aesthetics” and has

been performing surgeries in this area since 2017.He

continues to perform surgeries and research, including

penile enlargement and regenerative treatments for

erectile dysfunction, penile implant implantation,

chronic prostatitis, sexually transmitted diseases, and

chronic pelvic pain syndrome.

PhD. Sökmen has been a member of the European

Association of Urology since 2009. He has also

organized and served as an instructor for many

accredited training courses for the organization.

2021 Ph.D. Sökmen introduces unique andrology

trends in the field of urology with its portfolio of

treatments, patented devices and regenerative

therapies.He is currently conducting scientific research

and patient examinations at the Andro Expertise

Center for Men’s Health and Aesthetics, which was

opened in 2022 with his colleague Dr. Zulfu Sertkaya

with the same vision. He treats patients in his own

clinic and performs surgeries in affiliated hospitals.

Urologist

Areas Of Interest 

Laser Prostate Surgery (HoLEP, ThuFLEP) 

Robotic and Laparoscopic Urological Surgery 

Robotic MR/ Ultrasound Prostate Fusion Biopsy 

Urological Oncologic Surgery 

Andrology 

Benign Prostatic Hyperplasia (water vapor to the prostate) 

Focal Treatment for Prostate Cancer (HIFU, Nano Knife) 

Education 

Elementary school- Kolak, Denizli, Turkey (1986 - 1990) 

Secondary School- Yenimahalle School, Yatagan, Turkey (1990 - 1994) 

High School- Turgutreis High School, Muğla, Turkey (1994 - 1998) 

Gülhane Military Medical Academy Faculty of Medicine, Ankara, Turkey (1998 - 2004) 

Gülhane Military Medical Academy Urology Clinic Specialty Training, Ankara, Turkey (2007 - 2012)

Experience 

Liv Ulus Hospital 

Şişli Kolan International Hospital 

Istanbul University of Health and Technology 

Gülhane Military Medical Academy (GATA) 

Gülhane Education and Research Hospital 

University of Health Sciences, Gülhane Faculty of Medicine

Memberships

Turkish Urological Association 

Society of Endourology 

European Society of Urology (EAU) 

American Urological Association (AUA) 

World Society of Endourology

EXPERIENCE*

2019 - Present, Istanbul/Istanbul/Turkey

MEMORIAL ATAŞEHİR HOSPITAL

General Surgeon

2012 - 2019, Diyarbakır/Diyarbakır/Turkey

DİCLE UNIVERSITY FACULTY OF MEDICINE

General Surgeon

2011 - 2012, Van/Van/Turkey

VAN REGIONAL TRAINING AND RESEARCH HOSPITAL

General Surgeon

2009 - 2011, Van/Van/Turkey

HAKKARİ STATE HOSPITAL

General Surgeon

2004 - 2009, Van/Van/Turkey

YÜZÜNCÜYIL UNIVERSITY FACULTY OF MEDICINE

General Surgeon

2002 - 2004, Van/Van/Turkey

HACIBEKİR HEALTH CENTER

General Practitioner

*EDUCATION*

2018 - 2019, Diyarbakır/Turkey

Associate Professor

2015, Ohio/USA

OHIO STATE UNIVERSITY WEXNER MEDICAL CENTER

Neck Dissection Training

2012 - 2018, Diyarbakır/Turkey

Assistant Professor

1996 - 2002, Adana/Turkey

ÇUKUROVA UNIVERSITY

FACULTY OF MEDICINE - Medical Doctor Education

Areas Of Interest

Laser Prostate Surgeries (HoLEP, ThuFLEP) 

Robotic & Laparoscopic Surgery 

Robotic Transperineal Prostate MRI/Ultrasound Fusion Biopsy 

Urological Oncological Surgeries 

Female Urology 

Neuro-Urology 

Urethral Stenosis Surgeries (Graft Urethroplasty surgeries) 

Education 

Gulhane Military Medical Faculty 

Gülhane Military Medical Academy Department of Urology

Experience 

Liv Hospital Ulus 

KOLAN International Hospital 

Gülhane Training and Research Hospital 

Gulhane Military Medical Academy Research 

Evaluation of the effects of intracavernosal mitomycin-c administration on rat model in Peyroni’s disease (TÜBİTAK) 

Effects of intradetrusor decorin injection on tissue histopathology in rabbits with partial bladder outlet obstruction (TÜBİTAK)

Memberships 

Turkish Urological Association 

Society of Endourology 

European Society of Urology (EAU) 

American Urological Association (AUA

Accepting patients in the Urology medical unit of Florya Hospital, Prof. Dr. Semih Ayan completed his education at Sivas Cumhuriyet University Faculty of Medicine in 1997 and received the title of Urology Specialist. In 1999, he became a Postdoctoral Fellow in Pediatric Urology at Harvard University; He became Associate Professor of Urology in 2003 and Professor of Urology in 2009. In 2015, he completed his Minimal Invasive Urological Oncology (Clinical Fellow) studies at the University of Chicago and crowned his professional education and experience with international studies.

In the field of Urological Oncology, which is one of the physician's areas of interest, surgical treatment of prostate cancer, bladder cancer and kidney tumors provides a significant increase in the survival rate and the chance of surviving cancer. In the field of Pediatric Urology, which is another area of interest, congenital anomalies such as renal outflow stenosis, urinary reflux to the kidney and hypospadias are corrected by using innovative surgical applications and a lifelong contribution is provided to the patients.

Medical equipment required for medical diagnosis, treatment and surgical treatment to be given in the areas specified in our urology units, laparoscopic surgeries and all kinds of equipment suitable for the use of new surgical techniques are available in our hospital. With the treatment and operations performed in our hospitals by making use of the best facilities offered by medical technology, a significant increase in the quality of life is achieved while the patients are healed.

prof. Dr. Semih Ayan received almost all of his medical education and certificates from the leading institutions of America and Europe, and gained deep knowledge and international experience in many advanced specialties of urology. prof. Dr. Among the trainings and certificates Ayan has received internationally;

American Medical License (USML)

Pediatric Urology Fellow (1999-2000/Boston, USA)

Urological Oncology Fellow (2014-2015/USA).

Education:

1997 – 2003    Hacettepe University

2004 – 2009     Ankara Dışkapı Training and Research Hospital

2016 – 2019     Afyon Kocatepe University

Experience:

2022 – Still       Lokman Hekim Akay Hospital

2019 – 2022     Private Meddem Hospital

2018 – 2019      Afyon Kocatepe University

2015 – 2018      Afyon Kocatepe University

2012 – 2015      Bozok University Faculty of Medicine

2010 – 2012     Ankara Dışkapı Training and Research Hospital

2009 – 2010      TSK Rehabilitation and Care Center Presidency

2004 – 2009     Ankara Dışkapı Training and Research Hospital

Dr. Eymen Gazel is a leading uro-oncology specialist. He is known for advanced surgical treatment of prostate, kidney, bladder, and testicular cancers. Dr. Gazel specializes in minimally invasive, robot-assisted, and laparoscopic surgeries. These techniques help patients recover faster and achieve better outcomes.

Dr. Gazel is a pioneer in laser prostate surgery. He performs advanced HoLEP and ThuFLEP procedures, which set new standards for treating benign prostatic hyperplasia (BPH). He is also an expert in stone disease. Dr. Gazel uses modern endourology methods to treat complex urinary tract stones without open surgery.

He completed his medical training at Hacettepe University and specialized at Turkey High Specialization Hospital. Dr. Gazel has worked at leading hospitals, including Acıbadem Ankara. He is an active member of the Turkish Urology Association and the Endourology Society. His career reflects a strong commitment to excellence and innovation in urology.

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.