Orhan Koca

ORCID: 0000-0002-6184-8801
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About
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Research Areas
  • Urinary Bladder and Prostate Research
  • Urological Disorders and Treatments
  • Prostate Cancer Diagnosis and Treatment
  • Genital Health and Disease
  • Pelvic floor disorders treatments
  • Urologic and reproductive health conditions
  • Sexual function and dysfunction studies
  • Prostate Cancer Treatment and Research
  • Testicular diseases and treatments
  • Urinary and Genital Oncology Studies
  • Renal cell carcinoma treatment
  • Sperm and Testicular Function
  • Hormonal and reproductive studies
  • Sexual Differentiation and Disorders
  • Pediatric Urology and Nephrology Studies
  • Bladder and Urothelial Cancer Treatments
  • Surgical Sutures and Adhesives
  • Kidney Stones and Urolithiasis Treatments
  • Sexuality, Behavior, and Technology
  • Urinary Tract Infections Management
  • Cancer, Lipids, and Metabolism
  • Electromagnetic Fields and Biological Effects
  • Renal and related cancers
  • Health and Well-being Studies
  • Inflammatory Biomarkers in Disease Prognosis

Istanbul Eye Hospital
2020-2024

Haydarpaşa Numune Eğitim ve Araştırma Hastanesi
2012-2021

Sağlık Bilimleri Üniversitesi
2018-2020

Creative Commons
2019

Yeditepe University
2018

State Hospital
2013

İstanbul Eğitim ve Araştırma Hastanesi
2011

Hôpital Saint-Antoine
1995

Sorbonne Université
1995

Objectives: to examine the effects of urethroplasty surgery on sexual functions by taking into account age, location stenosis, length stenosis and surgical technique parameters. Materials Methods: The prospective study was conducted between January 2015 August 2017 with 60 cases. Patients were categorized according age groups (19-65 / 65-75 years), stricture localization length. Before operation postoperative 6th month follow-up, international index erectile function (IIEF) form (15...

10.1590/s1677-5538.ibju.2018.0276 article EN cc-by International braz j urol 2019-01-01

To analyze data from patient information forms (PIFs) submitted to the manufacturer of a new 3-piece inflatable penile prosthesis (IPP), Rigicon Infla10® , summarize interim outcomes 250 implantations in single center, which is largest series Türkiye. A retrospective review PIFs patients implanted with IPP between January 2021 and December 2023 was performed assess characteristics, surgical data, device durability, satisfaction, rates reoperation for any reason. The mean ± SD (range)...

10.5152/tud.2025.24122 article EN PubMed 2025-01-03

To investigate the possible effect of resectoscope size on urethral stricture rate after monopolar TURP.A retrospective study 71 men undergoing TURP was conducted at two centers' from November 2009 to May 2013. The patients were divided into one groups according diameter used for TURP. Resectoscope 24 F in group 1 (n=35) or 26 2 (n=36). Urethral catheter type, removal time and energy type kept constant all patients. formation different localizations compared between groups.There no...

10.1590/s1677-5538.ibju.2014.0093 article EN cc-by International braz j urol 2015-08-01

Monosymptomatic nocturnal enuresis is the nighttime bed-wetting that occurs among children without lower urinary tract symptoms or bladder dysfunction, and affects a considerable part of population. In our study effect laser acupuncture therapy on patients with primary monosymptomatic was evaluated in prospective, randomized, placebo controlled, single-blind study.A total 91 mean age 8.6 years who presented to outpatient clinic had not received any medical were included study. The randomized...

10.1016/j.juro.2010.12.071 article EN The Journal of Urology 2011-03-24

Purpose: In clinical practice, atypical small acinar proliferation (ASAP) and high-grade prostatic intraepithelial neoplasia (HGPIN) are two common findings on prostate biopsies.Knowing the frequency of a cancer diagnosis repeat biopsies would aid primary treating physicians regarding their decisions in suspicious cases.Materials Methods: One hundred forty-three patients whom revealed ASAP or HGPIN both were enrolled present study; was not reported biopsy specimens at least one...

10.4111/kju.2011.52.11.736 article EN Korean journal of urology 2011-01-01

Lower urinary tract symptoms (LUTS) and erectile dysfunction (ED) are frequently encountered in ageing males. We compared the efficacy of alfuzosin 10 mg alone or combination with sildenafil 50 treatment LUTS due to benign prostatic hyperplasia. One hundred male patients older than 45 years were randomized two groups containing each; one group receiving other combined mg. International Prostate Symptom Score (IPSS), quality life (QoL), maximum flow rate (Qmax), prostate volume post-void...

10.1111/j.1439-0272.2011.01268.x article EN Andrologia 2011-12-23

<b><i>Introduction:</i></b> Premature ejaculation (PE) is a frequently encountered sexual dysfunction in men. It significantly impairs quality of life the affected male and his partner. The aim this study to investigate role hormonal factors patients with PE. <b><i>Patients Methods:</i></b> 107 aged between 26 64 years (mean 45.1 ± 10.36) who consulted our outpatient clinics complaints PE 94 healthy males (48.1 11.81 years) as control group...

10.1159/000336137 article EN Urologia Internationalis 2012-01-01

Objective: Benign prostate hyperplasia (BPH) is becoming more prevalent in parallel to the changing demographic structures of community.Transurethral resection still considered most effective treatment.Due advances technology, different treatment modalities are being attempted.In our study, we compared long-term results standard transurethral (TURP) with plasmakinetic vaporization (PKVP, Gyrus Medical Ltd., Bucks, UK). Material and methods:Of 75 patients who were admitted outpatient clinic...

10.5152/tud.2014.82195 article EN Türk üroloji dergisi 2014-09-04

Nocturnal enuresis (NE) is very common and one of the most causes for patients to be admitted urology, pediatrics, child psychiatry surgery departments. We aimed investigate effect on depression self-esteem this disorder that can cause problems person's social development human relations.90 who were our clinic with complaints nocturnal enrolled. Investigations rule out organic performed in group patients. Out them 38 children adolescents (age range 8-18 years) primary monosymptomatic (PMNE)...

10.4081/aiua.2014.3.212 article EN Archivio Italiano di Urologia e Andrologia 2014-09-30

Nocturnal enuresis is a serious health problem affecting significant portion of the population. In this study, we investigated frequency punishment methods in nocturnal (NE) Turkey and its relationship with other parameters.A total 501 children (301 boys 200 girls) who were admitted to our outpatient clinic due included study. Mean age was 9.39 years (range 5-18). Prepared questionnaire form inquiring educational status family, implementation duration applied patients families.At least one...

10.1590/s1677-5538.ibju.2013.03.14 article EN cc-by International braz j urol 2013-06-01

To evaluate intraoral complications of buccal mucosa grafts harvested from one cheek, and used in augmentation urethroplasty.Twenty-one patients with anterior urethral strictures were included our study. In twelve patients, dorsal onlay, five ventral onlay four lateral procedures applied. Average length graft cheek was 5.2 cm (3-8 cm). all harvesting bleeding side, swelling, pain intensity oral or perineal area, analgesic use, transition time to normal diet, slurred speech, loss sensation,...

10.5152/tud.2014.46343 article EN Türk üroloji dergisi 2014-09-04

Prostat kanseri günümüzde sıklığı giderek artan, tanı ve tedavisindeki yeniliklerle birlikte lokalize olarak yakalandığında tam kür sağlanabilecek bir hastalıktır.Prostat erkeklerde akciğer kanserinden sonra en sık ikinci görülen kanserdir.Hastalığın periferik zonda multifokal küçük odaklar halinde meydana gelmesi yavaş ilerlemesinden dolayı erken evre prostat kanserlerinin çoğu asemptomatiktir.Semptomların varlığı sıklıkla lokal, ilerlemiş ve/veya metastatik hastalıkta görülür.Obstrüktif...

10.4274/nts.2018.020 article TR Nuclear Medicine Seminars 2018-11-30

Objectives: To evaluate national practice patterns in the treatment of male anterior urethral strictures among Turkish urologists. Materials and Methods: A survey form including 12 questions prepared to determine active urologists' approach diagnosis adult stricture (US) were filled out. Based on results, institutions which 218 urologists work their years expertise, methods they used for treatment, whether or not perform open urethroplasty timing investigated. Results: Optic internal...

10.1590/s1677-5538.ibju.2014.0672 article EN cc-by International braz j urol 2016-04-01

Abstract Implantation of penile prosthesis is considered when conservative measures fail or are unacceptable to patients’ wishing treatment for erectile dysfunction. In the United States (US), inflatable prostheses more often used than malleable (MPP). Outside US, reverse true because third-party reimbursement not available, and MPP considerably cheaper. Two American manufacturers make MPP; presently, a new manufacturer, Rigicon (Ronkonkoma NY), has recently begun sell its worldwide. Patient...

10.1038/s41443-023-00761-x article EN cc-by International Journal of Impotence Research 2023-09-07

Purpose: To investigate the relationship between accuracy of answers provided by patients to International Prostate Symptom Score (IPSS) questionnaire and age level education. Materials Methods: Two hundred thirty-eight men were given self-administered IPSS questionnaires. After 48 96 hours, form was completed again with assistance a physician. The difference forms education evaluated through Wilcoxon test. P values less than .05 considered significant. Results: There not significant two...

10.22037/uj.v8i3.1137 article EN Urology journal./Urology jornal. 2011-09-05

Aim: To assess the efficacy and safety of two different techniques (Percutaneous nephrolithotomy (PNL) vs Retrograde intrarenal surgery (RIRS)) in management stones patients with horseshoe kidneys (HSK). Patients methods: Departmental files 88 cases radiopaque kidney undergoing approaches (PNL RIRS) were evaluated respect to success complication rates a retrospective manner. In addition factors related procedures (success rates, additional procedures), patient stone characteristics all well...

10.4081/aiua.2018.3.149 article EN Archivio Italiano di Urologia e Andrologia 2018-09-30

Renal cell carcinoma is the third most common cancer after prostate and bladder tumors in urological malignancies. Recently, because of widespread use ultrasound computed tomography, incidental early stage renal have been encountered more frequently.In this study, we evaluated diagnostic efficacy neutrophil-to-lymphocyte ratio for diagnosis patients who underwent nephrectomy operation.The open surgery last eleven years were reviewed retrospectively. Patients diagnosed with other carcinomas...

10.2478/folmed-2018-0027 article EN PubMed 2018-11-29

Various risks have emerged in parallel to the rapidly increasing use of cell phones. Herein we studied effects phone emitted electromagnetic waves (EMW) on rat testes.Twenty one adult male Albino rats were grouped into 3 groups each consisting 7 rats. The first group was exposed EMW talk mode for 8 hours per day 20 days and then their testes extracted. second extracted after whole exposure. third control group. For statistical analysis Mann- Whitney U performed.At light microscopic...

10.4081/aiua.2014.4.274 article EN Archivio Italiano di Urologia e Andrologia 2014-12-30
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