Publications by authors named "Kayhan Yılmaz"

Purpose: Non-muscle invasive bladder cancers (NMIBC) constitute approximately 75% of bladder cancer cases. Primary transurethral resection (TUR) plays a pivotal role in both diagnosis and treatment. However, despite initial resection, tumors are often missed, leaving behind microscopic residual tumors.

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Objective: The objective of this study was to evaluate the minimum number of required cases for successful robotic retroperitoneal partial nephrectomy for an experienced surgeon in transperitoneal robotic surgery.

Methods: Our prospectively collected clinic database was evaluated retrospectively, and 50 patients who underwent robotic retroperitoneal partial nephrectomy by a single experienced surgeon from January 2019 to February 2023 were included in this study. Demographic and perioperative data and R.

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Introduction: We aimed to present our experience of robot-assisted laparoscopic radical prostatectomy (RARP).

Material And Methods: The study was a retrospective review of 500 patients who underwent RARP between March 2015 and July 2021 in our clinic. A transperitoneal approach was used in all patients.

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The aim of the study is to compare the results of early urinary continence (UC), pathological results, console time (CT), and perioperative morbidity in patients who underwent transperitoneal robot-assisted radical prostatectomy (TR-RARP) and Retzius-sparing robot-assisted radical prostatectomy (RS-RARP) surgeries in the treatment of clinically localized prostate cancer. A total of 120 patients, 60 (Group 1) with the TR-RALP technique and 60 (Group 2) with the RS-RALP technique, who had no statistical difference in their preoperative demographic data, were selected retrospectively. Perioperative and postoperative data, and continence rates in the first, third and sixth months were compared between the 2 groups.

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Introduction: To evlauate role of peritoneal re-approximation methods in the prevention of symphtomatic lymphocele formation in patients underwent transperitoneal robot-assisted laparoscopic prostatectomy (tRALP) and extendeded pelvic lympadenoctomy (ePLND).

Materials And Methods: Between January 2016 and April 2020, 120 consecutive patients who were administered anterior t-RALP and ePLND were analyzed retrospectively. In group 1 (n = 40), peritoneal approximation was not performed after t-RALP and ePLND application, peritoneal half re-approximation was performed in group 2 (n=40), and peritoneal full re-approximation was performed in group 3 (n=40).

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Bone pelvic dimensions and body habitus may have effects on robot-assisted radical prostatectomy (RARP). In this study, we examined the effects of body mass index, bone pelvis measurements and prostate measurements on console time (CT), decrease in postoperative hemogram level (DHL) and surgical margin(SM) in patients who underwent RARP for clinically localized prostate cancer in our institution. The data of transperitoneal RARP cases performed by a single surgeon between November 2016 and August 2020 were analyzed retrospectively.

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Objective: In this study, we aimed to present the perioperative and postoperative outcomes and early continence rates of the first 50 patients who underwent Retzius-sparing robot-assisted laparoscopic radical prostatectomy (RS-RALP) in our clinic for prostate adenocarcinoma.

Material And Methods: Between December 2018 and December 2019, 50 patients who underwent RS-RALP by 2 surgeons in our clinic were enrolled in the study. Preoperative, perioperative, and postoperative clinical data were analyzed retrospectively.

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Objective: To evaluate the importance of neutrophil-to-lymphocyte ratio (NLR), lymphocyte-to-monocyte ratio (LMR), platelet-to-lymphocyte ratio (PLR), neutrophil-to-monocyte ratio (NMR) and De Ritis ratio (DRR) in predicting clinical presentation and prognosis of patients with testicular germ cell tumors (TGCTs).

Study Design: Observational study.

Place And Duration Of Study: Antalya Training and Research Hospital Antalya, Turkey, from January 2009 to March 2020.

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To investigate the effects of pure binaural beats on anxiety and pain scores in male patients undergoing diagnostic cystoscopy (DC) and ureteral stent removal (USR) under local anesthesia. This was a prospective, randomized placebo-controlled study. Patients in the DC group (DCG) and USR group (USRG) were divided into three subgroups according to interventions applied; DCG-1 and USRG-1, patients listened to binaural beats; DCG-2 and USRG-2, patients listened to classical music; and DCG-3 and USRG-3, patients wore headphones, but were not exposed to audio (control group).

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Objective: To evaluate the importance of preoperative neutrophil-to-lymphocyte ratio (NLR),  lymphocyte-to-monocyte ratio (LMR), platelet-to-lymphocyte ratio (PLR), and neutrophil-to-monocyte ratio (NMR) in prostate cancer patients, who underwent robot-assisted radical prostatectomy (RARP).

Study Design: Observational study.

Place And Duration Of Study: Urology Department, Antalya Training and Research Hospital, Turkey, between March 2015 and September 2019.

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Objective: To evaluate the correlation between Visual Prostate Symptom Score (VPSS) and the International Prostate Symptom Score (IPSS) and uroflowmetry parameters in men with lower urinary tract symptoms (LUTS) with literature review.

Methods: Patients were pooled from 4 different urology clinics in Turkey and divided into 3 groups according to their educational level. The scores of IPSS and the VPSS questionnaire, assistance requirement, and completion time of the questionnaires were recorded.

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Objective: The objective of the study was to evaluate the effect of peritoneal re-approximation at the end of the procedure in transperitoneal robot-assisted radical prostatectomy (tRARP) and extended pelvic lymphadenectomy (ePLND) on operative, oncologic, and symptomatic lymphocele rates.

Material And Methods: A total of 79 patients were included in the study who underwent tRARP and bilateral ePLND performed by two different experienced surgeons. One of the surgeons performed the peritoneal re-approximation (Group 1, n=41) and the other did not re-approximate the peritoneum (Group 2, n=38) at the end of the procedure in tRARP and ePLND.

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Objective: This study aims to investigate whether pathology results obtained by radical retropubic prostatectomy (RRP) were correlated with active surveillance (AS) criteria defined by Klotz, Soloway and D'Amico.

Materials And Methods: In our clinic we evaluated 211 patients with diagnosis of localized prostate cancer who underwent RRP between 2007 and 2012. AS criteria defined by Soloway (cT ≤ T2, PSA ≤ 15 ng/dl, Gleason ≤ 6), Klotz (cT1c-T2a; if age ≥ 70 PSA ≤ 15 ng/dl, if age < 70 PSA ≤ 10 ng/dl; if age ≥ 70 Gleason ≤ 7(3+4), if age < 70 Gleason ≤ 6) and D'Amico (cT1c-T2a, PSA ≤ 10 ng/dl, Gleason ≤ 6) were used in our study.

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Introduction: To determine the effects of pelvic dimensions on margin status, preoperative and postoperative estimated blood loss (EBL), operative time and transfusion rate (TR) during radical retropubic prostatectomy (RRP).

Materials And Methods: Data from 94 patients with preoperative prostate MRI were analyzed. Pelvic dimensions, including interspinous distance (ISD), bony (BFW) and soft tissue (SW) pelvic width, apical prostate depth, upper conjugate (UC), lower conjugate (LC) were measured by preoperative MRI.

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