Erdal Alkan

ORCID: 0000-0002-0812-4003
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Research Areas
  • Ureteral procedures and complications
  • Kidney Stones and Urolithiasis Treatments
  • Pediatric Urology and Nephrology Studies
  • Urological Disorders and Treatments
  • Renal cell carcinoma treatment
  • Prostate Cancer Diagnosis and Treatment
  • Renal and Vascular Pathologies
  • Bladder and Urothelial Cancer Treatments
  • Renal and related cancers
  • Adrenal and Paraganglionic Tumors
  • Pituitary Gland Disorders and Treatments
  • Foreign Body Medical Cases
  • Urologic and reproductive health conditions
  • Sperm and Testicular Function
  • Hormonal Regulation and Hypertension
  • Urinary and Genital Oncology Studies
  • Urinary Bladder and Prostate Research
  • Hormonal and reproductive studies
  • Prostate Cancer Treatment and Research
  • Sympathectomy and Hyperhidrosis Treatments
  • Esophageal and GI Pathology
  • Intestinal and Peritoneal Adhesions
  • Plant Toxicity and Pharmacological Properties
  • Vascular Tumors and Angiosarcomas
  • Elasticity and Material Modeling

Memorial Sisli Hospital
2013-2016

Şişli Etfal Eğitim ve Araştırma Hastanesi
2010

Istanbul Memorial Hospital
2005

To report the 1-year efficacy and safety of photoselective vaporization prostate (PVP) by KTP laser for symptomatic obstructive benign prostatic hyperplasia (BPH).Between January 2004 March 2005, 240 patients aged 49 to 80 years (mean 65.3 years) with a referring complaint infravesical obstruction were treated prostatectomy using KTP/532 energy at W. The lobes readily vaporized capsular fibers. All underwent standard urologic evaluation International Prostate Symptom Score (IPSS), peak...

10.1089/end.2005.19.1199 article EN Journal of Endourology 2005-12-01

Purpose: To determine the protective effect of aliskiren on ischemia–reperfusion (I/R) injury in a rat renal model. Methods: Rats were randomly divided into five groups: sham control group; with pretreatment; I/R group and two doses pretreatment. unilaterally nephrectomized subjected to 45 min pedicle occlusion followed by 24 h reperfusion. Aliskiren (50 100 mg/kg) was administered orally gavage 1 prior ischemia. After reperfusion, kidney samples taken for determination malondialdehyde (MDA)...

10.3109/0886022x.2014.991327 article EN Renal Failure 2014-12-19

In this retrospective study, nature, clinical presentations, diagnostic modalities, and endoscopic treatment of urinary system foreign bodies were evaluated.A total 8 cases treated with surgery between February 15, 2007 June 12, 2012. Clinical findings, radiologic diagnosis, management reviewed.We observed that tract generally secondary to iatrogenic causes; however, bladder/urethral could also be due self-insertion. findings different their location in the system. All endoscopically.Foreign...

10.4293/jsls.2014.00271 article EN cc-by-nc-nd JSLS Journal of the Society of Laparoscopic & Robotic Surgeons 2014-01-01

We present our experience with same-session retrograde intrarenal surgery (RIRS) for the management of bilateral upper urinary system stones (UUSS) in terms clearance stones, operative times, duration hospital stay, and complications.Between November 2007 January 2013, a total 44 simultaneous RIRS were performed at hospital. Initially, symptomatic sides patients operated on, and, when asymptomatic, greater stone burden was treated first. Having completed fragmentation holmium:YAG laser,...

10.1089/end.2013.0766 article EN Journal of Endourology 2014-02-07

To evaluate the protective role of bosentan (BOS), an endothelin-1 (ET-1) receptor antagonist, and to show changes in rats with experimentally induced diabetic erectile dysfunction (ED), a total 24 albino Wistar were allocated into four groups. Group 1 was healthy group 2 had diabetes mellitus (DM) by intraperitoneal injection 60 mg kg-1 streptozotocin (STZ). Following establishment DM, 3 4 treated oral BOS doses 50 100 , respectively, for days. At end treatment, we evaluated yawning...

10.1111/and.12607 article EN Andrologia 2016-05-04

PURPOSE: A considerable percentage of patients with benign prostatic hyperplasia (BPH) also have additional cardiac pathologies, which often require anticoagulant therapy. The aim this study was to evaluate the efficacy and safety photoselective vaporization prostate (PVP) for BPH in receiving MATERIALS AND METHODS: total 67 suffering from high risk pathologies were operated on using laser prostatectomy. All had bleeding disorders requiring use, underwent standard urologic evaluation BPH....

10.1590/s1677-55382010000200009 article EN cc-by International braz j urol 2010-04-01

Purpose . To evaluate the safety and efficacy of RIRS for treatment multiple unilateral intrarenal stones smaller than 20 mm. Methods Between March 2007 April 2013, patients with mm were treated evaluated retrospectively. Each patient was stone number, burden (cumulative length), operative time, SFRs, complications. Results 173 in 48 included. Mean age, mean number per patient, burden, time were<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"...

10.1155/2014/314954 article EN cc-by Advances in Urology 2014-01-01

Objective: In this study we aimed to compare renal functions in patients who underwent robotic partial nephrectomy (RPN) with on-clamp and zero-ischemia techniques.Material methods: Between 2009 2015, 12 off-clamp 22 RPN procedures were performed on a total of 34 two centers.The main outcome parameters examined serum creatinine, estimated glomerular filtration rate (eGFR) during preoperative, immediate postoperative periods, at 3 rd months.Results: There no statistically significant...

10.5152/tud.2016.67790 article EN Turkish journal of urology 2016-11-24

You have accessJournal of UrologyDiscussed Poster, Monday, May 10, 2004, 1:00 - 5:00 pm1 Apr 20041152: Alpha-1 Receptor Blocking Therapy for Lower Ureteral Stones: A Randomized Prospective Trial Ali Tekin, Erdal Alkan, Melih Beysel, Ergin Yucebas, Ruknettin Aslan, and Feridun Sengor TekinAli Tekin , AlkanErdal Alkan BeyselMelih Beysel YucebasErgin Yucebas AslanRuknettin Aslan SengorFeridun View All Author Informationhttps://doi.org/10.1016/S0022-5347(18)38389-7AboutPDF ToolsAdd to...

10.1016/s0022-5347(18)38389-7 article EN The Journal of Urology 2004-04-01

Purpose . We aimed to compare and evaluate the outcomes complications of two endoscopic treatment procedures, semirigid ureteroscopy (SR-URS) flexible (F-URS), in proximal ureteral stones (PUS). Methods SR-URS (group 1) was done on 68 patients whereas 64 underwent F-URS 2) for PUS. Success rate defined as absence stone fragments or presence asymptomatic insignificant residual &lt; 2 mm. Outcomes were recorded. Results The differences statistically not significant age, gender, body mass index...

10.1155/2015/416031 article EN cc-by Advances in Urology 2015-01-01

We intended to evaluate the feasibility and effectiveness of simultaneous rigid flexible ureteroscopic treatment symptomatic ureteral ipsilateral small calyceal stones. Outcomes combined therapy were compared with monotherapy alone.In this retrospective study, group 1 consisted 45 patients middle or lower stones treated by therapy. Group 2 included only monotherapy. Stone characteristics, operative time, hospital stay, stone free rates, complications between groups 2. status was defined as...

10.5173/ceju.2015.538 article EN PubMed 2015-01-01

IntroductionWe investigated whether anterior periprostatic fat (APPF) tissue removed during robotic radical prostatectomy (RARP) contains any lymph nodes (LNs).Material and methods APPF tissues RARP in 129 patients were evaluated histopathologically.Correlation with postoperative pathologic stage was made.Patients a history of previous prostate or bladder surgery radiation therapy excluded.Results Mean patient age, serum specific antigen (PSA), weight body mass index (BMI) 62.2 ±5.5 (range...

10.5173/ceju.2015.650 article EN Editor-in-Chief s Voice List of Authors is an Important Element in a Scientific Publication 2015-01-01

Purpose . To ascertain whether retrograde intrarenal surgery (RIRS) is as effective in patients treated previously with open renal stone (ORSS) on the same kidney no previous ORSS. Methods There were 32 stones who had ORSS and RIRS study group (Group 1). A total of 38 selected control 2). Recorded data regarding preoperative characteristics patients, properties, surgical parameters, outcomes, SFRs (no fragments or small &lt;4 mm), complications between groups compared. Results Mean age, mean...

10.1155/2015/198765 article EN cc-by Minimally Invasive Surgery 2015-01-01

The case of a simultaneous robotic radical nephroureterectomy, genital tract and paravaginal nerve-sparing cystectomy, super-extended pelvic lymph node dissection intracorporeal Studer pouch construction on 57-year old female patient with muscle invasive bladder distal ureteral tumors, along hydroureteronephrotic nonfunctioning right kidney is presented. entire surgery was completed through total 8 ports in 9.5 hours. discharged home postoperative day-6 JJ-stent attached to the urinary...

10.5173/ceju.2014.03.art9 article EN Editor-in-Chief s Voice List of Authors is an Important Element in a Scientific Publication 2014-01-01

To evaluate the relation between biochemical recurrence (BCR) of prostate cancer and extent positive surgical margins (PSMs), Gleason score (GS) tumor at margins, preoperative prostate-specific antigen (PSA) levels.A total 94 patients who underwent radical prostatectomy were recruited for this study received postoperative follow-up care 2 years. All specimens evaluated margin status, PSM length, GS margin, size tumor, multifocality, invasion seminal vesicle, lymphovascular invasion,...

10.3906/sag-1303-128 article EN TURKISH JOURNAL OF MEDICAL SCIENCES 2014-01-01

Contralateral adrenal metastases from renal cell carcinomas are not commonly seen. To our knowledge, we presenting the first case of extraadrenal metastasis in English literature, contralateral RCC 6 months after radical nephrectomy. Patient was treated with robotic right adrenalectomy for continuous growing a de novo mass × 4 3 cm diameter. Tissue between vena cava, capsule, and inferior diaphragmatic surface removed en block. Pathological evaluation revealed carcinoma within fatty tissue...

10.1155/2013/206078 article EN cc-by Case Reports in Urology 2013-01-01

Abstract The aim of this study was to evaluate outcomes robotic partial nephrectomy (RAPN) procedures. At two centers, 42 patients underwent RAPN. Radius, Exo/Endophytic, Nearness, Anterior/Posterior, Location (R.E.N.A.L.) nephrometry and PADUA scores were calculated by computed tomography (CT) or magnetic resonance imaging (MRI). Intra‐ perioperative (0–30 days) complications evaluated using modified Clavien classification. A four‐arm da Vinci‐S surgical system used retrospectively. Mean...

10.1016/j.kjms.2015.09.008 article EN cc-by-nc-nd The Kaohsiung Journal of Medical Sciences 2015-10-31

Intravascular papillary endothelial hyperplasia (IPEH, Masson's Tumor) of the kidney is an unusual, benign vascular lesion.A rare case recurrent IPEH in was presented this article.A 50-year-old male with a diagnosis suspicious mass left referred to our center for robotic partial nephrectomy.Robotic zero ischemia nephrectomy performed due suspicion renal malignancy.On basis histopathological results, patient diagnosed as IPEH.A urinary ultrasound on 3 rd postoperative month and hyper echoic...

10.5152/tud.2016.43789 article EN Turkish journal of urology 2016-08-29

A majority of foreign objects ingested pass through the gastrointestinal tract without any complications. Sometimes, complications such as perforation and adhesions neighboring organs occur surgical treatment becomes necessary. We report case a 22-year-old female who was admitted with right flank pain. Past medical history revealed that patient had accidentally swallowed headscarf pin 11 months earlier. computed tomography scan confirmed body posterior to around ileocecal region. The pin,...

10.1159/000346329 article EN Urologia Internationalis 2013-01-01

You have accessJournal of UrologyStone Disease: Surgical Therapy II1 Apr 2016PD18-09 SHOULD STONE REMOVAL BE DONE AFTER FRAGMENTATION IN THE MANAGEMENT OF UPPER URINARY SYSTEM STONES? Erdal Alkan, Mirac Turan, Ahmet Oguz Ozkanli, Emre Arpali, Mehmet Murad Basar, Acar, and Mevlana Derya Balbay AlkanErdal Alkan More articles by this author , TuranMirac Turan OzkanliAhmet Ozkanli ArpaliEmre Arpali BasarMehmet Basar AcarOguz Acar BalbayMevlana View All Author...

10.1016/j.juro.2016.02.1188 article EN The Journal of Urology 2016-03-28

You have accessJournal of UrologyInfertility: Basic Research, Physiology, Pathophysiology1 Apr 2015MP76-08 THE EFFECT OF BOSENTAN, AN ENDOTHELIN-1 RECEPTOR ANTAGONIST ON TESTICULAR TISSUE OXIDANT AND ANTIOXIDANT LEVELS IN DIABETIC RATS Erdal Alkan, RüstemAnýl Urgan, Mehmet Murad Basar, Zekai Halýcý, Mevlana Derya Balbay, Harun Un, and Hasan Tarik Atmaca AlkanErdal Alkan More articles by this author , UrganRüstemAnýl Urgan BasarMehmet Basar HalýcýZekai Halýcý BalbayMevlana Balbay UnHarun Un...

10.1016/j.juro.2015.02.2793 article EN The Journal of Urology 2015-03-31

Amaç: Sistoskopi üroloji pratiğinde en sık yapılan girişimlerden biridir.Gelişen teknolojiyle beraber fleksibl aletlerin kullanımı artmıştır

10.5152/jarem.2013.360 article TR Journal of Academic Research in Medicine 2014-01-14

10.5173/ceju.2015.r100 article Editor-in-Chief s Voice List of Authors is an Important Element in a Scientific Publication 2015-01-01

Introduction: We present our experience with retrograde intrarenal surgery (RIRS) in patients calculi congenital anomalies of the upper urinary tract. Methods: A total 29 stones and kidney ureter, including duplicated collecting system, horseshoe (HSK), malrotated kidney, ureteropelvic junction stenosis (UPJ-S), ectopic pelvic (EPK), were treated RIRS between January 2008 December 2014. Success was defined as absence stone fragments or presence only asymptomatic insignificant residual &lt;3...

10.33590/emjurol/10314436 article EN cc-by-nc EMJ Urology 2015-06-25
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