Semih Ayan

Semih Ayan is a urologist holding a United States Medical License and a European Board of Urology certificate. He serves at VM Medical Park Florya Hospital and focuses on robotic surgery and pediatric urology. Ayan conducted research at Harvard Medical School and the University of Chicago.

Specialization and Surgical Focus

Ayan specializes in urologic oncology, specifically treating prostate, kidney, and bladder cancers. He uses robotic surgical techniques to improve patient recovery and precision during oncological procedures. He also treats pediatric patients for conditions including neonatal hydronephrosis, hypospadias, undescended testis, and urine reflux to the kidney.

Because urinary stone disease is prevalent in Turkey, Ayan treats a high volume of patients with this condition. He performs many endoscopic and percutaneous surgeries. These methods let him remove stones from the kidney, ureter, and bladder.

Advanced Training and Research

• 1999–2000 — Post-doctorate research fellow at Harvard Medical School, Children’s Hospital in Boston.
• 2014–2015 — Clinical fellow in Minimal Invasive Urologic Oncology at the University of Chicago.

During his time at Harvard, Ayan studied how ureteral obstruction affects fetal kidney development. This research contributed to the understanding of complex pediatric urological issues. Additionally, other researchers in the field have cited this work numerous times.

Work Experience

• 2014–2015 — Clinical Fellow at the University of Chicago Department of Surgery, Section of Urology.
• 2009 — Appointed as Professor of Urology.
• 2004 — Achieved the rank of Associate Professor of Urology.
• 1997 — Completed urology specialized education and began clinical practice.

Education

• 1991 — Graduated from Medical School.
• 1997 — Completion of residency in Urology.

Professional Memberships

• American Urological Association (AUA)
• European Association of Urology (EAU)
• Turkish Urologic Surgery Society
• Turkish Urologic Oncology Society

Scientific Publications

Ayan has authored 46 international scientific publications on various urological topics. Notable works include:

• "Partial ureteral obstruction dysregulates the RAS in the fetal sheep," Urology, 2001.
• "Efficacy of tolterodine as a firstline treatment for non-neurogenic voiding dysfunction in children," BJU Int, 2005.
• "K-RAS mutation in transitional cell carcinoma of urinary bladder," Int Urol Nephrol, 2001.
• "Prognostic value of the expression of Ki-67, CD44 and vascular endothelial growth factor in renal cell carcinoma," BJU Int, 2004.