Medical School

Hacettepe University Medical Faculty (English) 2002-2009  

Post-Graduate Training

Marmara Üniversitesi Medical Faculty Urology (2010-2015) 

Urology compliance: European Urology Committee “Fellowship” Diploma, FEBU (2017)

Specialty thesis: Investigation of the possible protective effect of melatonin for erectile dysfunction that developed in rats with experimental onset of diabetes (2015). Coordinator: Prof. Cem Akbal, M.D.

Professional Experience

Medical Interests

Laparoscopic urology surgeries

Laparoscopic radical prostatectomy. 
Laparoscopic radical cystectomy 
Laparoscopic partial nephrectomy.  
Laparoscopic radical nephrectomy
Laparoscopic retroperitoneal mass lesion excision.
Laparoscopic pyelopathy, ureteroneocystostomy
Laparoscopic vesicovaginal fistula repair
Laparoscopic sacro-colpopexy, l
Laparoscopic pyelolithotomy

Uro-oncology 

Kidney cancer, 
Prostate cancer,
Bladder cancer,
Testicular cancer,

Urinary system calculi

Percutaneous calculus surgery
Flexible - rigid ureteroscopy

Urinary incontinence and female urology 

TOT & TVT
Botox application

Reconstructive Urology (Congenital and acquired anomalies)

Urethral stenosis
Vesicovaginal fistula repair
Bladder and uterus prolapse
Benign prostatic hyperplasia 
Holep, Bipolep, Tur-p
Tuip

Andrology 

Penile Cuvarture repair
Penile prosthesis application

SCIENTIFIC PUBLICATIONS

Sahan A,Özkaptan O, Çubuk A, Kösemen M, Kara Ö, Akça O; Laparoscopic radical nephrectomy with inferior vena cava thrombectomy, Urology Video Journal (Gold Urology), Volume 13, 2022, https://doi.org/10.1016/j.urolvj.2022.100130

Sahan A, Cubuk A, Ozkaptan O, Ertaş K, Toprak T, Eryıldırım B, Sarıca K;  How does puncture modality affect the risk of intraoperative bleeding during percutaneous nephrolithotomy: A prospective randomized trial; Actas Urologicas Espanolas; 2020

Sarica K, Eryildirim B, Akdere H, Karagoz MA, Karaca Y, Sahan A. Predictive value of ureteral wall thickness (UWT) assessment on the success of internal ureteral stent insertion in cases with obstructing ureteral calculi. Urolithiasis. 2021 Jan 2. PubMed PMID: 33388820. Epub 2021/01/04.
Şahan A, Ozkaptan O, Cubuk A, Şimşek B, Tanidir Y, Akça O. Fast, Easy, and Safe Establishment of Pneumoperitoneum in Laparoscopic Surgery: The Fingertip Technique. JSLS : Journal of the Society of Laparoendoscopic Surgeons. 2021 Jan-Mar;25(1). PubMed PMID: 33628003. Pubmed Central PMCID: PMC7881279. Epub 2021/02/26. eng.
Ozkaptan O, Sahan A, Cubuk A. Comment on ""Mesh free" autologous transobturator mid urethral sling placement for predominant stress urinary incontinence: A pilot study". Neurourol Urodyn. 2021 Mar 19. PubMed PMID: 33739488. Epub 2021/03/20.
Çubuk A, Sahan A, Özkaptan O, Şimşek B, Sulukaya M, Tarhan F. The Types of Urodynamic Detrusor Overactivity and its Relationship With Neurological Diseases. 10-years Follow-up of 1000 Invasive Urodynamic Studies. Eastern Journal Of Medicine. 2021.
Çubuk A, Sahan A, Ozkaptan O, Dinçer E, Karaaslan O, Sarılar Ö, Akça O; Impact of autologous transobturator sling surgery on female sexual function: a comparative study with mesh used mid-urethral sling surgeries, Urologia Internationalis, 2021
Çubuk A, Şahan A, Özkaptan O, Ertaş K. Effect Of RENAL Nephrometry Score On the outcome Of Laparoscopic Partial Nephrectomy In Urologists At The Beginning Of the Learning Curve. Van Medical Journal. 2021;28(1):19-24.
Çubuk A, Şahan A, Özkaptan O. Mid-Üretral Sling Cerrahileri Sonrası Stress Tip Üriner İnkontinans Tedavisi. Kontinans ve nörouroloji bülteni. 2021:47-51.
Cubuk A, Özkaptan O, Sahan A. reply letter to Reply letter to: Retrograde Intrarenal Surgery vs. Percutaneous Nephrolithotomy vs. Extracorporeal Shock Wave Lithotripsy for Lower Pole Renal Stones 10-20 mm : A Meta-analysis and Systematic Review. Urol J. 2021 Jan 26. PubMed PMID: 33495987. Epub 2021/01/27. eng.
Toprak T, , Muhammed S, et al. Clinical Risk Factors for Extended Spectrum B-lactamase-producing Bacteriuria in Children with Myelodysplasia Performing Clean Intermittent Catheterization. Journal of Urological Surgery. 2020;7:139-43.
Toprak T, Sahan A , Arslan U, Kutluhan MA, et al. Can second to fourth finger ratio play a role in determining the risk of benign prostatic enlargement. Andrologia. 2020 May;52(4):e13529. PubMed PMID: 32039514. Epub 2020/02/11.
Sahan A, Orkunt O, Alkan C, Mete K, Oktay A. A Novel Open Abdominal Entry Method: Fingertip Technique. Videourology. 2020;0(0):null.
Sahan A, Gerin F, Garayev A, et al. The impact of tumor invasion to muscularis mucosaevascular plexus on patient outcome in pT1 bladder urothelial carcinoma. Arch Ital Urol Androl. 2020 Oct 2;92(3). PubMed PMID: 33016055. Epub 2020/10/06.
Sahan A, Dincer E, Ozkaptan O, et al. The impact of anterior calyceal stones on the outcomes of percutaneous nephrolithotomy for complex kidney stones: a comparative study. Minerva Urol Nefrol. 2020 Nov 17. PubMed PMID: 33200898. Epub 2020/11/18.
Sahan A, Cubuk A, Ozkaptan O, et al. Comparison of the safety and efficacy of the on-demand use of sertraline, dapoxetine, and daily use of sertraline in the treatment of patients with lifelong premature ejaculation: A prospective randomised study. Andrologia. 2020 Oct 28:e13854. PubMed PMID: 33113277. Epub 2020/10/29.
Sahan A, Cubuk A, Ozkaptan O, et al. Safety of Upper Pole Puncture in Percutaneous Nephrolithotomy with the Guidance of Ultrasonography versus Fluoroscopy: A Comparative Study. Urologia internationalis. 2020;104(9-10):769-74. PubMed PMID: 32726775. Epub 2020/07/30.
Sahan A, Cubuk A, Ozkaptan O. Letter to the Editor regarding the Article "Impact of Anterior Kidney Calyx Involvement of Complex Stones on Outcomes for Patients Undergoing Percutaneous Nephrolithotomy". Urologia internationalis. 2020 Jun 12:1-2. PubMed PMID: 32535596. Epub 2020/06/15.
Sahan A, Çubuk A, Ertaş K, et al. Is Bacterial Colonization in Ureteral Double-J Stents Significant and Is It Predictable? Journal of Urological Surgery. 2020;7(2):120-4.
Sahan A, Akbal C, Tavukcu HH, et al. Melatonin prevents deterioration of erectile function in streptozotocin-induced diabetic rats via sirtuin-1 expression. Andrologia. 2020 Jun 1:e13639. PubMed PMID: 32478903. Epub 2020/06/02.
Ozkaptan OMB, Alkan Çubuk, Ahmet Şahan, Kasım Ertaş, Cuneyd Sevinc, Tahir Karadeniz. Clinical and Pathological Predictors of Prolonged Lymphorrhoea After Pelvic Lymph Dissection in Radical Cystectomy. Eastern Journal Of Medicine. 2020:25(2): 211-7.
Ozkaptan O, Çubuk A, Dinçer E, Şahan A, Kafkaslí A, Akça O. Extraperitoneal Antegrade vs Transperitoneal Open Radical Cystectomy: Single Center Experiences with 200 Cases Bladder cancer. 2020.
Ozkaptan O, Balaban M, Sevinc C, Cubuk A, Sahan A, Akca O. Impact of intra-operative doppler ultrasound assistance during microsurgical varicocelectomy on operative outcome and sperm parameters. Andrologia. 2020 May 7:e13641. PubMed PMID: 32379354. Epub 2020/05/08.
Eryıldırım B, Sarica K, Ustun F, Sahan A. ; Comparison of Middle and Lower Calyceal Access for Renal Pelvis Stone in Percutaneous Nephrolithotomy: A Prospective Randomized Study. Urologia internationalis. 2020;104(9-10):758-64. PubMed PMID: 32702697. Epub 2020/07/24.
Eryildirim B, Sahan A, Turkoglu O, et al. Non-invasive evaluation of obstruction after ureteroscopic stone removal: Role of renal resistive index assessment. Arch Ital Urol Androl. 2020 Oct 2;92(3). PubMed PMID: 33016056. Epub 2020/10/06.
Ertas K, Temiz MZ, Colakerol A, Kucuk SH, Sahan A, Yuruk E. Effects of flexible ureteroscopy on kidney: A prospective clinical trial. Turkish Journal of Urology. 2020 Mar 11. PubMed PMID: 32449673. Epub 2020/05/26.
Dinçer E, Çanakçı C, Sahan A, Hancı B, Akça O. Review of the Literature of Retroperitoneal Liposarcoma with Two Cases. Türkiye Klinikleri Journal of Case Reports. 2020.
Cubuk A, Yanaral F, Sahan A, et al. Modified Autologous Transobturator Tape Surgery - A Prospective Comparison With Transobturator Tape Surgery. Urology. 2020 Sep 24. PubMed PMID: 32979380. Epub 2020/09/27.
Colakerol A, Temiz MZ, Tavukcu HH, Sahan A et al. Effects of ozone treatment on penile erection capacity and nitric oxide synthase levels in diabetic rats. International Journal of Impotenace Research. 2020 May 11. PubMed PMID: 32393847. Epub 2020/05/13.
Balaban M, Ozkaptan O, Cubuk A, Sahan A, Duzenli M, Tuncer M. Endoscopic treatment of symptomatic VUR disease after the renal transplantation: analysis of 49 cases. Clin Exp Nephrol. 2020 May;24(5):483-8. PubMed PMID: 31955313. Epub 2020/01/20.
Toprak T, Şahin A, Akgul K, Sahan A et al. The relationship between anogenital distance and lifelong premature ejaculation. Andrology. 2019.
Sahan A, Guctas AO, Atabay D, Kiicuk H, Sekerci CA. Testis Sparing Surgery in Children. Journal of Urological Surgery. 2019;6(3):255-8.
Simsek H, Gul A, Yentur S, Sahan A. A rare case of 47, XXY/46, XY mosaic klinefelter syndrome with unique phenotype. Int ResJMedBiomedSci. 2018.
Tarcan T, Sekerci CA, Akbal C, Sahan A et al. Is 40 cm H2O detrusor leak point pressure cut‐off reliable for upper urinary tract protection in children with myelodysplasia? Neurourology and urodynamics. 2017;36(3):759-63.
Tanıdır Y, Şekerci ÇA, Top T, Sahan A et al. Utility of Voiding Dysfunction Symptom Score in Diagnosis and Treatment of Enuresis Nocturna. Journal of Urological Surgery. 2017;4(1):8-12.
Tanidir Y, Sahan A, Asutay MK, et al. Differentiation of ureteral stones and phleboliths using Hounsfield units on computerized tomography: a new method without observer bias. Urolithiasis. 2017;45(3):323-8.
Tanidir Y, Mangir N, Sahan A, Sulukaya M. Turkish version of the Ureteral Stent Symptoms Questionnaire: linguistic and psychometric validation. World journal of urology. 2017;35(7):1149-54.
Sekerci CA, Tanidir Y, Sener TE, Sahan A et al. Effects of platelet-rich plasma against experimental ischemia/reperfusion injury in rat testis. Journal of pediatric urology. 2017;13(3):317. e1-. e9.
Sekerci ÇA, Tanıdır Y, Şener TE, Sahan A et al. The Significance of the Contralateral Testis Size Measurement with Ultrasonography in Predicting Monorchism in Boys with Nonpalpable Testicles. Journal of Urological Surgery. 2017;4(2):61.
Gül A, Sahan A, Fırat C, Tanıdır Y. An unusual bladder mass: Dermoid cyst and review of the literature. Eastern Journal Of Medicine. 2017;22(4):227.
Akgül M, Sulukaya M, Sahan A, et al. Design and Validation of the Marmara Post-prostatectomy Incontinence Symptom Score. Journal of Urological Surgery. 2017;4(1):1.
Tanıdır Y, Şener TE, Şekerci ÇA, Sahan A et al. The role of occult spinal malformation and upper urinary tract deterioration in children with intractable voiding dysfunction. Marmara Medical Journal. 2016;29(3):157-63.
Sahan A, Garayev A, Akgül M, et al. Should We Perform Thoracic Imaging for Every Patient with a Renal Mass? Bulletin of Urooncology. 2016;15(3):90.
Sekerci CA, Akbal C, Sener TE, Sahan A et al. Resistant pediatric priapism: A real challenge for the urologist. Canadian Urological Association Journal. 2015;9(7-8):E562.
Sahan A, Akbal C, Garayev A, et al. Can Surgical Technique Affect the Success of Endoscopic Treatment in Children with Vesicoureteral Reflux and Overactive Bladder Syndrome? Journal of Urological Surgery. 2015;3:135-40.
Akbal C, Şahan A, Garayev A, et al. Assessment of Differential Renal Function in Children with Hydronephrosis: Comparison of DMSA and MAG-3. Journal of Urological Surgery. 2015;3:129-34.
Tarcan T, Mangir N, Sahan A, Tanidir Y, Sulukaya M, İlker Y. Safety and efficacy of retropubic or transobturator midurethral slings in a randomized cohort of Turkish women. Urologia internationalis. 2014;93(4):449-53.
Akbal C, Şahan A, Şener TE, et al. Diagnostic value of the pediatric lower urinary tract symptom score in children with overactive bladder. World journal of urology. 2014;32(1):201-

BOOK SECTIONS
1.Ahmet Şahan; Ürolojide sık kullanılan deney hayvan modelleri, Bölüm adı: Kavernozal Sinir Yaralanması (2020).   Editör: Bilal Eryıldırım, Ates Kadıoglu, Basım sayısı:1, ISBN:978-605-68063-3-9, TÜD/TÜRK ÜROLOJI AKADEMISI YAYINI NO: 22 (Experimental animals models commonly used in urology, Section: Cavernous Nerve Injury (2020). 

PRESENTATIONS

Adım adım laparoskopik nefroüreterektomi, Sahan A, Türk Üroloji Dernegi, Kuzey Marmara Şubesi aylık toplantısı, Double tree Otel/İstanbul (2020). (Laparoscopic nephroureterectomy step-by-step). 
Semi Live cerrahi: Laparoskopik Nefroüreterektomi, Sahan A, Saglık Bilimleri Üniversitesi Üroloji Günleri Online kongresi (2021). (Semi-Live Surgery: Laparoscopic Nephroureterectomy). 
Laparoskopik Piyelolitotomi, Sahan A, Türk Üroloji Derneği, Üroloji Yaz Kampı (Online) (2020). (Laparoscopic Pyelolithotomy). 
Laparoskopik Ürolojik cerrahi , Sahan A. Trakya Üroloji Hekimleri Aylık Bilimsel Toplantısı, Kırklareli Eğitim ve Araştırma Hastanesi, Şubat 2022 Kırklareli (Laparoscopic Urologic Surgery). 
Üst Üriner Sistem Tümörlerinde Cerrahi Tedavi Şeçenekleri, Sahan A, 2. Saglık Bilimleri Üniversitesi Üroloji Günleri (Renaissance Polat Otel, 2022). (Surgical Treatment Options in Upper Urinary System Tumors). 
Laparoskopik parsiyel nefrektomi  Sahan A, Türk Üroloji Derneği Kuzey Marmara Şubesi Dr. Atıf Aktaş Toplantısı (Radisson Blue Otel 2022) (Laparoscopic partial nephrectomy). 

REPORTS
Laparoskopik retroperitoneal kitle eksizyonu, Sahan A, Akça O (2020). 6. Minimal invaziv ürolojik cerrahi derneği kongresi, (Video report) (Laparoscopic retroperitoneal mass lesion excision). 
Oligometastatik prostat kanserinde laparoskopik pelvik lenf nodu diseksiyonu, Sahan A Ozkaptan O, Çubuk A, Akça O, (2020). 6. Minimal invaziv ürolojik cerrahi derneği kongresi, (Video report) (Laparoscopic pelvic lymph node dissection in oligometastatic prostatic cancers). 
Laparoskopik mesane divertikül eksizyonu, Ozkaptan O, Sahan A, Çubuk A, Akça O (2020), 6. ulusal minimal invaziv ürolojik cerrahi kongresi, (Video report) (Laparoscopic bladder diverticulum excision). 
Adım adım laparoskopik üst pol heminefroüreterektomi Sahan A, Ertaş K, Tanıdır Y(2018).. 4. Ürolojik cerrahi derneği kongresi, (Video report) (Laparoscopic upper pole heminephroureterectomy step-by-step). 
Staghorn böbrek tası tedavisinde laparoskopik pyelolitotomi, Sahan A, Ertaş K, (2018). 4. Ürolojik cerrahi dernegi kongresi, (Video report) (Laparoscopic pyelithotomy in Staghorn renal calculus treatment). 
Segmental renal arter klempi ile laparoskopik parsiyel nefrektomi; Sahan A, Ertaş K, Tanıdır Y. (2018). 4. ürolojik cerrahi dernegi kongresi, (Video report). (Laparoscopic partial nephrectomy with segmental renal artery clamp). 
Çaprazlayan damar basısına sekonder üreteropelvik bileske darlıklarında laparoskopik vasküler hitch teknigi, Sahan A, Ertaş K, (2018).4. Ürolojik cerrahi dernegi kongresi, (Video report) (Laparoscopic vascular hitch technique in ureteropelvic junction stenoses secondary to crossed vascular compression). 
A prospective and randomized trial of efficacy and safety of transdermal oxybutynin versus oral oxybutynin in the management of children with overactive bladder, Sevinç AH, Sahan A Ozkaptan O, Çubuk A, Kafkaslı A, Çanakçı C, Telli O (2020) EAU20 Virtual Congress and Theme Week, Doi: 10.1016/S2666-1683(20)33350-4 
Computed tomography can predict positive stone cultures prior to percutaneous nephrolithotomy, Tanidir Y, Garayev A, Sahan A, Şener TE, Tinay İ, Şekerci ÇA, Akbal C, Şimşek F (2016). American Urological Association (AUA) 2016 Annual Meeting, Doi: 10.1016/j.juro.2016.02.1360
Impacted ureteral stones: Radiological and perioperative findings and the efficiency of preoperative medical expulsive treatment, Tanıdır Y, Talibzade F, Sahan A, Asutay MK, Tinay İ, Şimşek F. (2015).. 30. Annual EAU Congress, 14, Doi:10.1016/S1569-9056(15)60951-4
ICIQ-SF is an accurate non-invasive tool that can be used in primary care setting to determine the type of urinary incontinence, Mangir N, Sahan A, Tarcan T(2011). 41st annual meeting of the international-continence-society (ICS), 144
Kadın inkontinans cerrahilerinde mes kullanımı ile ilgili tartısmalar Türk hasta grubunda cerrahi girisim kararına etki ediyor mu? Çubuk A, Sahan A, Akça O (2020). 29. Ulusal Üroloji Online kongresi (Discussions regarding mesh use in female urinary incontinence surgeries). 
(S-044) Is Re-TUR necessary for all the patients who have undergone complete TUR bladder? Sahan A, Bulut M, 9. Avrasya Üroonkoloji kongresi
Cilt tas mesafesindeki dokuların ESWL basarısına etkisi  Çanakçı C, Karaca Y, Sahan A, Dinçer E, Simsek B, Eryıldırım B (2019).. 13. Ulusal Endoüroloji Kongresi (Effect of tissue between skin and calculus on success of ESWL). 

COURSES and CERTIFICATONS
SPSS basic statistics course, basic statistical information and practical education, Istanbul 03.05.2014 - 04.05.2014
Experimental Animals certificate, theoretical and practical education for investigations to be performed with small experimental animals, Marmara University experimental animals laboratory, 08.05.2014 – 29.05.2014
Endnote use course, Basic theoretical and practical education on endnote use, Marmara University Central Library, 09.01.2015 – 09.01.2015
Robotic surgery course, practical education with conventional approach and simulation, Antalya /Belek 14. Üroonkoloji kongresi, 09.11.2019 - 09.11.2019
Endoscopic combined intrarenal surgery, Türk Üroloji Akademisi (one to one surgical course) US-guided entrance to kidney (2019)

MEMBERSHIPS
Urological Surgery Association, 2011
European Association of Urology (EAU), 2015
Turkish Urology Association, 2019
Minimal Invasive Urological Surgery Congress, 2019