Articles Published in International Peer-Reviewed Journals:

A1. G.Koc, S.Un, DN. Filiz, K.Akbay, Y.Yilmaz, “Does washing the biopsy needle with povidone-iodine have an effect on infection rates after transrectal prostate needle biopsy?’’, Urol Int (ISI), 85(2), 147-51pp., 2010, DOI: 10.1159/000314340
A2. B.Oktay, H.Vuruskan, G.Koc, ME.Danisoglu, Y.Kordan, “Single-port extraperitoneal transvesical adenomectomy: initial operative experience’’, Urol Int (ISI), 85(2), 131-4pp., 2010, DOI: 10.1159/000314896
A3. G.Koc, RT.Divrik, N.Unlu, V.Bulut, F.Zorlu, “Does cisplatin-based chemotherapy effect on blood lipid levels of patients with germ cell testicular tumor in long-term follow-up?’’, Int Urol Nephrol (ISI), 43(4), 1095-100pp.,2011, DOI 10.1007/s11255-011-9939-4
A4. B.Oktay, G.Koc, H.Vuruskan, ME.Danisoglu, Y.Kordan, “Laparoscopic extraperitoneal simple prostatectomy for benign prostate hyperplasia: a two-year experience”, Urol J (ISI), 8(2), 107-12pp.,2011.
A5. DN.Filiz, Y.Yilmaz, G.Koc, A.Dirik, K.Akgul, “Effect of verumontanum resection in transurethral resection of the prostate on postoperative voiding function and incontinence”, Surgical Practice (ISI), 15, 48–53 51pp., 2011, DOI:10.1111/j.1744-1633.2011.00540.x
A6. G.Koc, X.Wang, Y.Luo, “Pazopanib: an orally administered multi-targeted tyrosine kinase inhibitor for locally advanced or metastatic renal cell carcinoma”, Can J Urol (ISI), 18(6), 5991-7pp., 2011.
A7. G.Koç, NN.Tazeh, FN.Joudi, HN.Winfield, CR.Tracy, JA.Brown, “Lower extremity neuropathies after robot-assisted laparoscopic prostatectomy on a split-leg table”, J Endourol (ISI), 26(8),1026-9pp., 2012, DOI: 10.1089/end.2011.0653
A8. G.Koc, YS.Sural, DN.Filiz, Y.Yilmaz, “Perineal Ectopic Testis”, Urol J (ISI), 9(1),433-5pp., 2012
A9. G.Koc, Y.Yilmaz, S.Un, K.Akbay, F.Akdeniz, “The Effect of Alpha Blockers on Uroflowmetric Parameters in Different Voiding Positions”, Canadian Urological Association Journal (ISI), 2013 May-Jun;7(5-6):E329-32, DOI: 10.5489/cuaj.12091
A10. G.Koc, K.E.Akbay, H.Tarhan, O.Cakmak, Y.Yilmaz, “Clinical Comparison of the Pneumatic and the Combined Lithotripters in Percutaneous Nephrolithotomy”, Surgical Practice (ISI), (2013) 17, 58-62, doi: 10.1111/1744-1633.12000
A11. V.Bulut, G.Koc, AF.Sahin, Y.Balaban, IH.Ozgu, “Giant Hydronephrosis Due to Congenital Ureteropelvic Junction Obstruction”, UroToday International Journal, 4(3):art 4,2011, doi:10.3834/uij.1944-5784.2011.06.11
A12. G.Koc, K.Akgul, Y.Yilmaz, A.Dirik, S.Un, “The effects of cigarette smoking on prostate-specific antigen in two different age groups”, Canadian Urological Association Journal (ISI), 2013 Nov-Dec;7(11-12):E704-7, doi: 10.5489/cuaj.358.
A13. F.Koc, S.Aksit, G.Koc, O.Halicioglu, Y.Yilmaz, O.Cakmak, H.Tarhan, “Parental attitudes and practices about circumcision in Izmir, Turkey”, Journal of Universal Surgery, 2013; Vol. 2 No. 1:2 doi: 10.3823/808
A14. G.Koç, H.Turk, S.Un, CS.Isoglu, F.Zorlu, “Castleman’s disease imitating adrenal mass in the retroperitoneal area”, Canadian Urological Association Journal (ISI), 2015 Jan-Feb;9(1-2):E48-51, doi: 10.5489/cuaj.2266.
A15. Autorino R, Zargar H, Mariano MB, Sanchez-Salas R, Sotelo RJ, Chlosta PL, Castillo O, Matei DV, Celia A, G.Koc, Vora A, Aron M, Parsons JK, Pini G, Jensen JC, Sutherland D, Cathelineau X, Nuñez Bragayrac LA, Varkarakis IM, Amparore D, Ferro M, Gallo G, Volpe A, Vuruskan H, Bandi G, Hwang J, Nething J, Muruve N, Chopra S, Patel ND, Derweesh I, Champ Weeks D, Spier R, Kowalczyk K, Lynch J, Harbin A, Verghese M, Samavedi S, Molina WR, Dias E, Ahallal Y, Laydner H, Cherullo E, De Cobelli O, Thiel DD, Lagerkvist M, Haber GP, Kaouk J, Kim FJ, Lima E, Patel V, White W, Mottrie A, Porpiglia F, “Perioperative Outcomes of Robotic and Laparoscopic Simple Prostatectomy: A European-American Multi-institutional Analysis”, European Urology (ISI), 2015 Jul;68(1):86-94, doi: 10.1016/j.eururo.2014.11.044.
A16. I.Akarken, H.Tarhan, RG.Ekin, Ö.Çakmak, G.Koç, YÖ.İlbey, F.Zorlu, “Visceral obesity: A new risk factor for stone disease”, Canadian Urological Association Journal (ISI), 2015 Nov-Dec;9(11-12):E795-9. doi: 10.5489/cuaj.3145
A17. H.Turk, O.Celik, S.Un, M.Yoldas, CS.İsoglu, M.Karabicak, B.Ergani, G.Koc, F.Zorlu , YO.Ilbey. “Predictive factors for biochemical recurrence in radical prostatectomy patients”, Cent European J Urol. 2015;68(4):404-9. doi: 10.5173/ceju.2015.606.
A18. RG.Ekin, F.Zorlu, I.Akarken, Z.Yildirim, H.Tarhan, G.Koc, U.Kucuk, U.Bayol, “Anterior apical cores in the initial prostate biopsy does not increase detection of significant prostate cancer”, Urology Journal (ISI), 2015 Apr 29;12(2):2084-9.
A19. H.Türk, S.Ün, O.Koca, M.Karabıçak, B.Ergani, G.Koç, H.Tarhan, F.Zorlu, “Efficacy of the neutrophil-lymphocyte ratio on biochemical recurrence in patients treated with radical prostatectomy”, Eur. J. Oncol.; Vol. 21, n. 2, pp. 100-107, 2016
A20. CS Isoglu, T.Suelozgen, H.Boyacioglu, G.Koc, “Effects of body mass index on the outcomes of percutaneous nephrolithotomy”, Int Braz J Urol. 2017 Jul-Aug;43(4):698-703. doi:10.1590/S1677-5538. IBJU.2016.0678.
A21. G.Koc, H.Turk, M.Karabicak, S.Un, B.Ergani, RG.Ekin, “Is Prostate Biopsy Recommended in Turkish Men with a Prostate-Specific Antigen Level between 2.5 and 4 ng/mL? “, Curr Ther Res Clin Exp. 2017 Apr 18;84:50-53. doi: 10.1016/j.curtheres.2017.04.003.
A22. C.Yucel, M.Z.Keskin, O.Cakmak, B.Ergani, C.Kose, O.Celik, E.Islamoglu, M.Ucar, G.Koc, Z.Kozacioglu, “Predictive value of pre-operative inflammation-based prognostic scores (neutrophil-to-lymphocyte ratio, platelet-to-lymphocyte ratio, and monocyte-to-eosinophil ratio) in testicular sperm extraction: a pilot study”, Andrology. 2017 Nov;5(6):1100-1104. doi: 10.1111/andr.12417.
A23. E.Kisa, C.Yucel, S.Budak, M.Ucar, M.Z.Keskin, O.Cakmak, G.Koc, Z.Kozacioglu, “The effect of the American Society of Anesthesiology classification scores on complications associated with percutaneous nephrolithotomy.“, Arch Ital Urol Androl. 2018 Jun 30;90(2):112-116. doi: 10.4081/aiua.2018.2.112.
A24. C.Yucel, V.Ulker, E.Kisa, G.Koc, Y.O.Ilbey, “Laparoscopic Transperitoneal Nephrectomy in Non-functioning Severe Hydronephrotic Kidneys With or Without Renal Stone”, Cureus 10(12): e3729. DOI 10.7759/cureus.3729
A25. E. Kisa, H.Sahin, O.Cakmak, C.Yucel, G.Koc, Z.Kozacioglu, YO.Ilbey, “Magnetic resonance imaging characteristics and changes in hemostatic agents after partial nephrectomy.“, Int Urol Nephrol. 2019 Jun;51(6):917-925. doi: 10.1007/s11255-019-02141-1.
A26. E.Kisa, G.Koc, C.Yucel, MZ.Keskin, AE.Capar, Z.Kozacioglu, “Renal artery pseudoaneurysm after open partial nephrectomy for renal cell carcinoma.“, Urologia. 2019 Jul 8:391560319862250. doi: 10.1177/0391560319862250.
A27. A.Eroglu, RG.Ekin, G.Koc, RT.Divrik, “The prognostic value of routine second transurethral resection in patients with newly diagnosed stage pT1 non-muscle-invasive bladder cancer: results from randomized 10-year extension trial. “, Int J Clin Oncol. 2019; Apr;25(4):698-704. doi: 10.1007/s10147-019-01581-0.
A28. G.Koç, G.R.Ekin, B.Ergani YÖ.İlbey, “A comparison of renal vascular control techniques during laparoscopic nephrectomy”, J Min Access Surg. 2020, doi: 10.4103/jmas.JMAS_287_19
A29. M Karabicak, H Turk, B Ergani, Z Kozacioglu, G Koc, YO Ilbey, ”Can we detect index tumor using transrectal ultrasound-guided prostate biopsy?“, KUWAIT MEDICAL JOURNAL 53 (2), 136-139
A30. M Karabicak, H Turk, B Ergani, Z Kozacioglu, G Koc, YO Ilbey, ”Is Gleason score in transrectal ultrasound guided prostate biopsy consistent with Gleason score in radical prostatectomy?“, KUWAIT MEDICAL JOURNAL 53 (2), 145-149
A31. T Cetin, MY Yalcin, E Karaca, MH Ozbilen, B Ergani, G Koc, H Boyacioglu YO Ilbey, ”Laparoscopic surgery experience does not influence oncological and functional results of robotic-assisted laparoscopic prostatectomy“, Urologia Journal 89 (2), 240-243, https://doi.org/10.1177/03915603211004781

Papers Presented at International Scientific Meetings and Published in the Proceedings Book:

B1. G.Koc, T.Divrik, N.Unlu, V. Bulut, F Zorlu, Does Cisplatin-based Chemotherapy Effect on Blood Lipid Levels of Patients with Germ Cell Testicular Tumor in Long Term Follow-Up? 31st Congress of SIU (October 16–20 2011, Berlin). Urology. 2011 Sep;78 (Supp 3A):S379 (UP-03.110)
B2. G.Koc, Y.Yilmaz, F.Akdeniz, K.Akbay, S.Un, Does Intestinal Preparation Before Prostate Biopsy Guided by Transrectal Ultrasonography Affect Infection Rates? Congress of SIU (October 16–20 2011, Berlin). Urology. 2011 Sep;78 (Supp 3A):S85 (MP-08.01)
B3. G.Koc, F.Akdeniz, S.Un, Y.Yilmaz, K.Akbay, Effect of Urethral Catheter in Infection Rates After Prostate Biopsy. Congress of SIU (October 16–20 2011, Berlin). Urology. 2011 Sep;78 (Supp 3A):S223 (UP-01.115)
B4. G.Koc, Y.Yilmaz, K.Akbay, F.Akdeniz, S.Un, Does Diabetes Mellitus Affect Infection Rates after Prostate Biopsy? Congress of SIU (October 16–20 2011, Berlin). Urology. 2011 Sep;78 (Supp 3A):S223 (UP-01.116)
B5. G.Koc, K.Akbay, Y.Yilmaz, F.Akdeniz, The Effect of Body Mass Index on Operative and Fluoroscopy Time, Postoperative Hematocrite and Creatinin Values in Percutaneous Nephrolitotomy. Congress of SIU (October 16–20 2011, Berlin). Urology. 2011 Sep;78 (Supp 3A):S109 (MP-10.20)
B6. G.Koc, Y.Yilmaz, S.Un, F.Akdeniz, K.Akbay. The Effect of Reccurrent Biopsies on Infection Rates, Hematuria, Rectal Hemorrhage and Hematospermia. Congress of SIU (October 16–20 2011, Berlin). Urology. 2011 Sep;78 (Supp 3A):S334 (UP-02.210)
B7. G.Koc, F.Akdeniz, Y.Yilmaz, H.Turk, Effect of the Anesthesia Method Used During Prostate Biopsy on Re-Biopsy Decision. Congress of SIU (October 16–20 2011, Berlin). Urology. 2011 Sep;78 (Supp 3A):S334-335 (UP-02.211)
B8. G.Koc, K.Akbay, F.Akdeniz, Y.Yilmaz, S.Un, Effect of Dilatation Type Used During Percutaneous Nephrolitotomy Operations on Operation and Fluoroscopy Times, Preoperative and Postoperative Hematocrit and Creatinine Levels. Congress of SIU (October 16–20 2011, Berlin). Urology. 2011 Sep;78 (Supp 3A):S108-109 (MP-10.19)

Articles Published in National Peer-Reviewed Journals:

D1. E.K.Akbay, Ü.Küçük, F.Akdeniz, E.E.Pala, G.Koç, Ü.Bayol, Y.Yılmaz H, “Tuberculosis Epididymo-orchitis: A Case Report”, Yeni Üroloji Dergisi – The New Journal of Urology, 6 (2), pp. 42-44, 2011
D2. E.K.Akbay, G.Koç, N.D.Filiz, S.Ün, F.Akdeniz, Y.Yılmaz, “Does a prilocaine 2% injection into the nephrostomy tract have a role in acute pain management after a lower caliceal puncture during a percutaneous nephrolithotomy? A prospective randomized study with 100 patients”, Turkish Journal of Urology, 38(2), pp. 70-73, 2012 DOI:10.5152/tud.2012.017
D3. Ö.Çakmak, H.Tarhan, G.Koç, E.Konyalıoğlu, T.Divrik, F.Zorlu, “Prostate Calcification: A Risk Factor for Prostate Cancer?”, Tepecik Eğit Hast Derg, 22 (1), pp. 45-48, 2012.
D4. S.Ün, G.Koç, H.Türk, O.Koca, Y.Yılmaz, F.Akdeniz, “The Effect of Anesthesia Method Used During Prostate Biopsy on Re-biopsy Decision”, Ege Tıp Dergisi, 2015, Vol. 54, No. 3, pp. 124-126
D5. R.G.Ekin, Z.Y.Ekin, G.Koç, G.Diniz, Y.Ö.İlbey, F.Zorlu, “Pathological Outcomes of Gender Difference in the Diagnosis of Primary Bladder Cancer“, Tepecik Eğitim ve Araştırma Hastanesi Dergisi 2015; 25(2):89-92, doi:10.5222/terh.2015.089
D6. S.Ün, G.Koç, H.Türk, Y.Yılmaz, “The Effect of Repeated Prostate Biopsies on Complication Rates”, Ege Tıp Dergisi, 2016;55(1):11-13
D7. H.Türk, S.Ün, M.Karabıçak, B.Ergani, G.Koç, Y.Ö.İlbey, F.Zorlu, “Histopathological Findings in Patients Who Underwent Prostate Biopsy: Single-Center Results”, Ege Tıp Dergisi, 2016;55(3):105-108
D8. G.Koç, “Laparoscopic Adenomectomy”, Türkiye Klinikleri Üroloji Laparoskopik Cerrahi Özel Sayısı, Turkiye Klinikleri J Urology-Special Topics 2016;9(3)
D9. B.Ergani, M.Karabıçak, A.C.Ergani, Ü.Küçük, G.Koç, Z.Kozacıoğlu, Y.Ö.İlbey, “Two Cases of Transitional Cell Bladder Cancer Under 18 Years Old in Our Clinic”, Tepecik Eğitim ve Araştırma Hastanesi Dergisi 2017; 27(3):246-250, doi:10.5222/terh.2017.246
D10. R.G.Ekin, Z.Yıldırım, G.Koç, G.Diniz, Z.Kozacıoğlu, “The Relationship Between Prostate Volume and Prostate Cancer in Patients Undergoing Transrectal Prostate Biopsy”, Tepecik Eğitim ve Araştırma Hastanesi Dergisi 2018;28(1):57-61, doi:10.5222/terh.2018.057
D11. M.Y.Yalcin, M.Karabicak, B.Ergani, T.Cetin, M.H.Ozbilen, T.Suelozgen, G.Koc, “Nephrocutaneous Fistula: An Unusual Nephrectomy Indication in Percutaneous Nephrolithotomy”, Journal of Urological Surgery 2019;6(1):59-61. Doi: 10.4274/jus.galenos.2018.2042
D12. B.Ergani, M.Karabıçak, H.Türk, M.Yoldaş, C.S.İşoğlu, T.Süelözgen, G.Koc, Y.Ö.İlbey, “Does Increased Stone-Skin Distance Due to Obesity Affect Outcomes of Percutaneous Nephrolithotomy?”, Journal of Urological Surgery, 2019;6(4):283-288. Doi: 10.4274/jus.galenos.2019.2660
D13. B.Ergani, T.Çetin, M.Y.Yalçın, M.H.Özbilen, Ç.Bildirici, E.Karaca, H.Boyacıoğlu, G.Koç, Y.Ö.İlbey, “Effect of Rectal Mucosa Cleansing on Acute Prostatitis During Prostate Biopsy: A Randomized Prospective Study.” Turk J Urol. 2020 Jan 6:1-6. doi: 10.5152/tud.2019.19172.

Papers Presented at National Scientific Meetings and Published in Proceedings:

E1. K. Akbay, G. Koç, D. Filiz, Y. Yilmaz, "The Effect of Local Anesthesia Application on Postoperative Pain Score After Percutaneous Nephrolithotomy," 8th National Endourology Congress, Antalya (November 4-7, 2009), Interactive Poster (IP64), p.208.
E2. G. Koç, S. Ün, K. Akbay, F. Akdeniz, Y. Yilmaz, "The Effect of Different Voiding Positions on Uroflowmetric Parameters," 21st National Urology Congress, Istanbul (October 30 - November 3, 2010), Poster Presentation, p.143.
E3. G. Koç, F. Akdeniz, S. Ün, Y. Yilmaz, H. Türk, "The Effect of Anesthesia Method Applied During Prostate Biopsy on the Decision for Re-biopsy," 21st National Urology Congress, Istanbul (October 30 - November 3, 2010), Poster Presentation, p.242.
E4. G. Koç, K. Akbay, S. Ün, Y. Yilmaz, "The Effect of Repeated Biopsies on Rates of Hematuria, Rectal Bleeding, and Hematospermia," 21st National Urology Congress, Istanbul (October 30 - November 3, 2010), Poster Presentation, p.247.
E5. G. Koç, K. Akbay, S. Ün, Y. Yilmaz, "The Effect of Repeated Biopsies on Infection Rates," 21st National Urology Congress, Istanbul (October 30 - November 3, 2010), Poster Presentation, p.250.
E6. G. Koç, S. Ün, K. Akbay, Y. Yilmaz, "Does Washing the Biopsy Needle with Povidone-Iodine Solution Affect Infection Rates After Transrectal Prostate Needle Biopsy?", 21st National Urology Congress, Istanbul (October 30 - November 3, 2010), Poster Presentation, p.262.
E7. G. Koç, K. Akbay, F. Akdeniz, Y. Yilmaz, "Effect of Body Mass Index on Operation and Fluoroscopy Times in Percutaneous Nephrolithotomy Operations," 21st National Urology Congress, Istanbul (October 30 - November 3, 2010), Poster Presentation, p.286.
E8. G. Koç, F. Akdeniz, K. Akbay, Y. Yilmaz, "Effect of the Type of Dilatation Applied on Preoperative and Postoperative Hematocrit and Creatinine Values in Percutaneous Nephrolithotomy Operations," 21st National Urology Congress, Istanbul (October 30 - November 3, 2010), Poster Presentation, p.287.
E9. G. Koç, K. Akbay, F. Akdeniz, Y. Yilmaz, "Effect of Body Mass Index on Preoperative and Postoperative Hematocrit and Creatinine Values in Percutaneous Nephrolithotomy Operations," 21st National Urology Congress, Istanbul (October 30 - November 3, 2010), Poster Presentation, p.302.
E10. G. Koç, K. Akbay, F. Akdeniz, Y. Yilmaz, "Effect of Type of Dilatation Applied on Operation and Fluoroscopy Times in Percutaneous Nephrolithotomy Operations," 21st National Urology Congress, Istanbul (October 30 - November 3, 2010), Oral Presentation, p.51.
E11. G. Koç, Y. Yilmaz, F. Akdeniz, S. Ün, K. Akbay, "Does Diabetes Mellitus Affect Infection Rates After Prostate Biopsy?", 21st National Urology Congress, Istanbul (October 30 - November 3, 2010), Oral Presentation, p.64.
E12. G. Koç, S. Ün, F. Akdeniz, Y. Yilmaz, H. Türk, "Does Bowel Preparation Before Transrectal Ultrasound Guided Prostate Biopsy Affect Infection Rates?", 21st National Urology Congress, Istanbul (October 30 - November 3, 2010), Oral Presentation, p.66.
E13. G. Koç, Y. Yilmaz, S. Ün, F. Akdeniz, "Effect of Urethral Catheter on Infection Rates After Prostate Biopsy," 21st National Urology Congress, Istanbul (October 30 - November 3, 2010), Oral Presentation, p.67.
E14. G. Koç, T. Divrik, N. Ünlü, V. Bulut, F. Zorlu, "Does Cisplatin-Based Chemotherapy Affect Blood Lipid Levels in Patients with Germ Cell Testis Tumor?", 10th Urooncology Congress, Antalya, Belek (October 26-30, 2011), Poster Presentation (P-74), p.202.
E15. G. Koç, N. N. Tazeh, C. R. Tracy, H. W. Winfield, F. N. Joudi, J. A. Brown, "Lower Extremity Neuropathies Developing After Robot-Assisted Laparoscopic Prostatectomy Using Split Leg Table," 9th National Endourology Congress, Ankara (October 5-9, 2011), Presented Poster (PSS-044), p.85.
E16. G. Koç, E. K. Akbay, F. Akdeniz, H. Türk, Y. Yilmaz, "Comparison of Two Different Stone Breakers Used in Percutaneous Nephrolithotomy Operations," 9th National Endourology Congress, Ankara (October 5-9, 2011), Poster Presentation (PSS-037), pp.224-225.
E17. K. Akbay, G. Koç, N. D. Filiz, F. Akdeniz, S. Ün, Y. Yilmaz, "Effectiveness of 2% Prilocaine Injection in Acute Pain Control After PNL Operation," 9th National Endourology Congress, Ankara (October 5-9, 2011), Presented Poster (PSS-076), p.121.
E18. G. Koç, Y. Yilmaz, H. Türk, F. Akdeniz, S. Ün, S. İşoğlu, "The Importance of Host Factor in Infections Developed After Transrectal Prostate Biopsy," 22nd National Urology Congress, Turkish Republic of Northern Cyprus (May 2-6), Poster Presentation (p-102), pp.176-177.
E19. G. Koç, Y. Yilmaz, H. Türk, F. Akdeniz, S. Ün, "Is Prostate Biopsy Necessary for Patients with Prostate-Specific Antigen Level Between 2.5-4.0 ng/dl?", 22nd National Urology Congress, Turkish Republic of Northern Cyprus (May 2-6), Poster Presentation (p-168), p.213.
E20. G. Koç, F. Koç, O. Halıcıoğlu, K. E. Akbay, Y. Yilmaz, S. Akşit, Z. Kurugöl, "Current Information and Evaluations on Circumcision Practice in Turkey," 22nd National Urology Congress, Turkish Republic of Northern Cyprus (May 2-6), Poster Presentation (p-230), p.247.
E21. Ö. Çakmak, H. Tarhan, E. Konyalioğlu, G. Koç, T. Divrik, F. Zorlu, "Prostate Calcification: Is it a Risk Factor for Prostate Cancer?", 1st National Urologic Surgery Congress, Antalya (October 3-7, 2012), Poster Presentation (S-7-9), p.242.
E22. M. Yoldaş, T. K. Yoldaş, C. S. İşoğlu, B. Ergani, O. Mertoğlu, T. Süelözgen, O. Çelik, M. Z. Keskin, Ö. Çakmak, G. Koç, F. Zorlu, Y. Ö. İlbey, "Our Experiences with Bladder Stones," 11th National Endourology Congress, Antalya (April 23-26, 2015), Oral Presentation (S-031), p.46.
E23. R. G. Ekin, G. Koç, B. Ergani, T. Çetin, B. Ercili, Y. Yalçın, Y. Ö. İlbey, F. Zorlu, "Active Surveillance is Safe in Low Risk Prostate Cancer," 12th Urooncology Congress, Antalya (November 18-22, 2015), Oral Presentation (SS-20), p.29.
E24. O. N. Yalbuzdağ, Ö. Çakmak, G. Koç, M. Yoldaş, S. Budak, R. G. Ekin, Y. Ö. İlbey, "Bladder Cancer with Elevated Beta-HCG: Trophoblastic Differentiation," 12th Urooncology Congress, Antalya (November 18-22, 2015), Poster Presentation (PS-052), p.175.
E25. S. Ün, H. Türk, O. Koca, O. Köse, G. Koç, "Effect of Preoperative Neutrophil-Lymphocyte Ratio on Overall Survival in Patients Undergoing Radical Cystectomy," 12th Urooncology Congress, Antalya (November 18-22, 2015), Poster Presentation (PS-061), pp.186-187.
E26. H. Türk, S. Ün, G. Koç, M. Karabıcak, B. Ergani, O. Koca, F. Zorlu, "Factors Predicting Biochemical Recurrence in Patients Undergoing Radical Prostatectomy," 12th Urooncology Congress, Antalya (November 18-22, 2015), Poster Presentation (PS-072), pp.202-203.
E27. H. Türk, S. Ün, M. Yoldaş, M. Karabıcak, B. Ergani, G. Koç, H. Tarhan, F. Zorlu, "Acute Bacterial Prostatitis After Prostate Biopsy: Current Microbiological Spectrum, Antibiotic Sensitivity and Clinical Findings," 12th Urooncology Congress, Antalya (November 18-22, 2015), Poster Presentation (PS-075), pp.206-207.
E28. H. Türk, S. Ün, G. Koç, M. Karabıcak, B. Ergani, H. Tarhan, O. Koca, F. Zorlu, "Effect of Neutrophil-Lymphocyte Ratio on Biochemical Recurrence in Patients Undergoing Radical Prostatectomy," 12th Urooncology Congress, Antalya (November 18-22, 2015), Poster Presentation (PS-078), p.210.
E29. G. Koç, R. G. Ekin, O. N. Yalbuzdağ, Y. Ö. İlbey, F. Zorlu, "Is 24-Core Prostate Biopsy Necessary During Active Surveillance?", 12th Urooncology Congress, Antalya (November 18-22, 2015), Poster Presentation (PS-093), p.234.
E30. O. N. Yalbuzdağ, M. Yoldaş, S. Ekmekci, Ö. Çakmak, S. Budak, Ü. Küçük, G. Koç, Y. Ö. İlbey, "Could Gleason Tertiary Score in TRUS Biopsy Pathology be a Prognostic Marker?", 12th Urooncology Congress, Antalya (November 18-22, 2015), Poster Presentation (PS-115), p.267.
E31. H. Türk, O. Koca, S. Ün, M. Yoldaş, M. Karabıcak, G. Koç, F. Zorlu, "Factors Causing Lymph Node Metastasis in Prostate Cancer," 12th Urooncology Congress, Antalya (November 18-22, 2015), Poster Presentation (PS-132), pp.295-296.
E32. R. G. Ekin, T. Çetin, Y. Yalçın, M. Karabıcak, G. Koç, Y. Ö. İlbey, "Radical Prostatectomy in High-Risk Prostate Cancer: Single Center Experience," Eurasian Urooncology Spring Congress, Bursa (April 28 – May 1, 2016), Oral Presentation (S-01), p.32.
E33. R. G. Ekin, G. Koç, O. N. Yalbuzdağ, T. Çetin, Y. Ö. İlbey, "Is 24-Core Biopsy Useful During Active Surveillance Follow-Up?", Eurasian Urooncology Spring Congress, Bursa (April 28 – May 1, 2016), Poster Presentation (P-09), p.56.
E34. M. Y. Yalçın, Y. Ö. İlbey, G. Koç, Ö. Çakmak, E. Can, G. R. Ekin, M. Karabıcak, Z. Kozacıoğlu, "Our Experience with Robot-Assisted Laparoscopic Radical Retropubic Prostatectomy: 49 Cases," 25th National Urology Congress, Cyprus (October 6 – 9, 2016), Poster Presentation (P-038).
E35. R. G. Ekin, G. Koç, O. N. Yalbuzdağ, Ö. Çakmak, S. Karamazak, M. Karabıcak, T. Çetin, Y. Yalçın, Z. Kozacıoğlu, "Radical Prostatectomy in High-Risk Prostate Cancer: Single Center Experience," 25th National Urology Congress, Cyprus (October 6 – 9, 2016), Poster Presentation (P-100).
E36. M. Karabıcak, G. Koç, O. N. Yalbuzdağ, S. Karamazak, Ö. Çakmak, B. Ergani, R. G. Ekin, Z. Kozacıoğlu, "Evaluation of Histological Types of Pathology Reports of Patients Undergoing TUR-M for Primary Bladder Tumor at Our Hospital," 25th National Urology Congress, Cyprus (October 6 – 9, 2016), Poster Presentation (P-118).
E37. R. G. Ekin, G. Koç, Ö. Çakmak, O. N. Yalbuzdağ, S. Karamazak, M. Karabıcak, T. Çetin, Y. Yalçın, Z. Kozacıoğlu, "Active Surveillance Outcomes in Prostate Cancer: Single Center Experience," 3rd National Urologic Surgery Congress, Antalya (November 2-6, 2016), Oral Presentation (SP-39), pp.60-61.
E38. B. Ergani, G. Koç, Y. Ö. İlbey, O. Mertoğlu, F. Zorlu, M. Karabıcak, M. Y. Yalçın, T. Çetin, Z. Kozacıoğlu, "Pathology Results of Testis Tumor Patients Older Than Fifty Years," 3rd National Urologic Surgery Congress, Antalya (November 2-6, 2016), Poster Presentation (SP-63), p.294.
E39. G. Koç, M. Y. Yalçın, R. G. Ekin, T. Çetin, Ö. Çakmak, Z. Kozacıoğlu, Y. Ö. İlbey, "Our Experience with Robot-Assisted Laparoscopic Radical Retropubic Prostatectomy: 65 Cases," 7th Urooncology Congress, Edirne (January 26-29, 2017), Poster Presentation (P-033), p.83.
E40. C. Yücel, M. Z. Keskin, Ö. Çakmak, B. Ergani, C. Köse, O. Çelik, G. Koç, Z. Kozacıoğlu, "Role of Hematologic Inflammatory Parameters in Predicting Success of Sperm Retrieval in TESE," 12th National Andrology Congress, Bodrum (May 19-22, 2017), Poster Presentation (MP-014).
E41. C. Yücel, M. Z. Keskin, E. Can, Ö. Çakmak, M. Karabıcak, C. Köse, Ü. Küçük, G. Koç, Z. Kozacıoğlu, "Predictive Factors Determining Salvage TESE Success After Failed TESE," 12th National Andrology Congress, Bodrum (May 19-22, 2017), Poster Presentation (MP-015).
E42. E. Kısa, S. Budak, C. Yücel, M. Uçar, Ö. Çakmak, G. Koç, Z. Kozacıoğlu, "The Effect of American Society of Anesthesiologist Scores on Percutaneous Nephrolithotomy Complications," 26th National Urology Congress, Cyprus (October 12-15, 2017), Oral Presentation (OP-073).
E43. R. G. Ekin, S. Günnaz, Z. Y. Ekin, G. Koç, T. Çetin, Y. Ö. İlbey, G. Deniz, F. Zorlu, "The Effect of NMR Spectroscopy Analysis of Urine Sample Taken Before Prostate Biopsy on Prostate Cancer Diagnosis," 13th Urooncology Congress, Antalya (November 8-12, 2017), Oral Presentation (SS20).
E44. B. Ergani, M. Karabıcak, A. C. Ergani, Ü. Küçük, G. Koç, Z. Kozacıoğlu, Y. Ö. İlbey, "Two Transitional Cell Bladder Cancer Cases Under 18 Years Old Seen in Our Clinic," 13th Urooncology Congress, Antalya (November 8-12, 2017), Poster Presentation (PS048).

E45. M.Y. Yalçın, T. Çetin, M.H. Özbilen, Ç. Bildirici, T. Süelözgen, G. Koç, Ö. Çakmak, Y.Ö. İlbey,
“Fibroepithelial Polyp Case on Glans Penis Associated with Clean Intermittent Catheterization”,
27th National Urology Congress, Turkish Republic of Northern Cyprus (October 26-29, 2018), Poster Presentation (PP-107)

E46. M. Karabıcak, H. Türk, B. Ergani, M.Y. Yalçın, O. Çelik, Z. Kozacıoğlu, G. Koç, Y.Ö. İlbey,
“Is the Gleason Score of Prostate Biopsy under Transrectal Ultrasound Guidance Consistent with the Gleason Score of Radical Prostatectomy?”,
4th Urological Surgery Congress, Antalya (October 31 - November 4, 2018), Poster Presentation (PS-029)

E47. M. Karabıcak, H. Türk, B. Ergani, M.Y. Yalçın, O. Çelik, Z. Kozacıoğlu, G. Koç, Y.Ö. İlbey,
“Can Index Tumor Be Detected by Prostate Biopsy under Transrectal Ultrasound Guidance?”,
4th Urological Surgery Congress, Antalya (October 31 - November 4, 2018), Poster Presentation (PS-156)

E48. B. Ergani, T. Çetin, M.Y. Yalçın, M.H. Özbilen, Ç. Bildirici, E. Karaca, M. Karabıcak, H. Türk, H. Boyacıoğlu, G. Koç, Y.Ö. İlbey,
“The Effect of Rectal Mucosa Cleaning Applied During Prostate Biopsy on Acute Prostatitis”,
14th Uro-oncology Congress, Antalya (November 6-10, 2019), Oral Presentation (SS029)

E49. T. Çetin, G. Koç, M.Y. Yalçın, Ç. Bildirici, Y.Ö. İlbey,
“Incidental Bladder Tumor During Robotic Radical Prostatectomy”,
14th Uro-oncology Congress, Antalya (November 6-10, 2019), Poster Presentation (PS080)

E50. M.Y. Yalçın, G. Koç, T. Çetin, M.H. Özbilen, Ç. Bildirici, E. Karaca, B. Karabacakoğlu, E. Can, Ö. Çakmak, Z. Kozacıoğlu, O. Çelik, Y.Ö. İlbey,
“Our Robotic Assisted Radical Retropubic Prostatectomy Experiences, 168 Cases”,
14th Uro-oncology Congress, Antalya (November 6-10, 2019), Poster Presentation (PS184)