Factors effecting the success of retrograde intrarenal surgery in pediatric patients with renal stones: The experience of two tertiary centres with 368 renal units.

INTRODUCTION AND OBJECTIVES: Currently, in the field of pediatric urology, the primary aim of surgical approaches for the treatment of renal stone disease is to provide a stoneless state through minimally invasive methods, and to prevent the damage that such stones may cause in the urinary system and stone recurrence. The aim of this study was to evaluate the efficacy and safety of RIRS and the factors affecting its success in the surgical treatment of renal stones in pediatric patients. METHODS: Data from 357 pediatric and 368 renal units were collected retrospectively. The recorded parameters were age, gender, location and burden of the stone, and presence of postoperative residual stones. RESULTS: The stone location was the upper pole in 28 (7.6 %) patients, the middle pole in 44 (12 %), the pelvis in 98 (26.6 %), the lower pole in 139 (37.8 %), and multiple locations in 59 (16 %) patients. A stoneless state was achieved in 277 (75.3 %) units, while 91 units (24.7 %) had residual stones at the end of the first month. In the multivariate analysis, the development of residual stones was found to be significantly associated with age (odds ratio [OR], 1.123; p = 0.012) and stone location (OR, 3.142; p = 0.018). DISCUSSION: RIRS is an endourological procedure with a high success rate in the achievement of a stoneless state in both pediatric and adult age groups, with an 82-100 % success rate reported in various studies. A full stoneless state was achieved in 277 (75.3 %) units after the initial RIRS in the present study, and full stone clearance was achieved in 304 units after the second RIRS session, with a success rate of 82.6 %. A limitation of our study is that it was not performed by a single surgeon, and stone samples could not be taken from all patients for stone analysis. CONCLUSION: RIRS has also been associated with a high success rate in the endoscopic treatment of renal stones and is an efficient and safe method with a minimal rate of complications, especially in the pediatric age group.

How Much Do Altmetric Scores Correlate with Bibliometric Scores? Analysis of the Most-Cited 100 Articles about the Holmium Laser Enucleation Prostatectomy.

INTRODUCTION: In addition to bibliometric scores, which are an indicator of academic popularity, it has become frequently used in altmetric scoring that shows the visibility of articles on social media and the internet. In this study, 100 most-cited studies on holmium laser enucleation prostatectomy (HoLEP) were examined, and it was investigated whether the number of citations per year of these studies was affected by altmetric and bibliometric scores. METHODS: The 100 most-cited HoLEP articles between 2000 and 2020 were included in the study. Some bibliometric scores such as h-indexes, impact factors, Scientific Journal Rankings (SJR) scores of the journals and demographics of the articles (such as the number of the citations per year, total number of citations, and total altmetric scores) were recorded. The effects of altmetric and bibliometric scores on the number of citations per year were evaluated by correlation analysis. RESULTS: The median number of citations per year of the articles was 5.88 (4.69-8.42). It was determined that altmetric scores were not an effective factor on the number of citations per year (p = 0.335). A moderate relationship was found between the journal impact factor and the number of citations per year (p < 0.001, r = 0.471, R2 = 0.251). Journal h-index (p < 0.001, r = 0.424, R2 = 0.084), the SJR score (p < 0.001, r = 0.374, R2 = 0.254), and the publication year of the article (p = 0.001, r = 0.326, R2 = 0.023) were significantly but weakly correlated with the median number of citations per year. CONCLUSION: It was seen that the number of citations per year, which is the most important academic quality indicator, is not related to the altmetric scores. In addition, traditional bibliometric parameters still maintain their effectiveness on the number of citations.

Demirtas Two-Step Treatment Model in Hypofunctional-Obstructed Kidneys: An Extended Series and Long-Term Prospective Results.

AIM: This study aimed to present the short- and long-term results of Demirtas two-step treatment model in patients with obstructed-hydronephrotic kidneys functioning below 10%, and before deciding on nephrectomy, to evaluate whether this method can contribute to the accurate assessment. MATERIAL AND METHODS: This prospective study included patients with unilateral renal obstruction and renal parenchymal loss assessed by computed tomography and whose renal function was found to be below 10% in Tc-99m-dimercaptosuccinic acid. In the first step, percutaneous nephrostomy (PCN) was performed. Two weeks later, the second step was performed, in which patients were offered nephrectomy (if renal function was <10%) or etiology-based treatment (if renal function was ≥10%). RESULTS: Thirty-eight patients were included in the study, comprising 20 (52.6%) men and 18 (47.4%) women with a mean age of 51.3±16.8 years. Mean baseline renal function was 6.0%, which increased to 10.8% two weeks after PCN (p=0.001). Renal function increased to above 10% in 20 (52.6%) out of 38 patients. Of these, 17 patients underwent etiology-based treatment and baseline, two-week, and 12-month renal function levels were 7.0%, 17.5%, and 18.8%, respectively (p<0.001). CONCLUSION: Demirtas two-step treatment model introduced in the present study can be recommended as a standard treatment modality in unilaterally obstructed kidneys functioning below 10% ability.

Natural Orifice Transurethral Endoscopic Vesicovaginal Fistula (NOTE-VVF) Treatment for Early and Small Fistulas: Case Report and the Point of Technique.

Minimally invasive surgical approaches have become highly popular in line with technological advancements. In vesicovaginal fistula (VVF) repair, numerous minimally invasive surgical techniques have been described, namely, laparoscopic, robotic, and transvaginal techniques, and used. However, these techniques still require invasiveness. In this report, we present a patient with iatrogenic VVF on whom we applied a novel "zero-incision" technique, Natural Orifice Transurethral Endoscopic Vesicovaginal Fistula (NOTE-VVF) treatment, to repair the fistula tract by advancing the laparoscopic trocar through a natural orifice, i.e., urethra.

A Prospective Study and Single-Center Experience: Effectivity of Fusion Prostate Biopsy in Biopsy-Naïve Patients.

Objective Fusion prostate biopsy (FPB) has become a popular technique in biopsy-naïve patients, though not accepted as a standard approach (yet). In this study, we aimed to present the clinical outcomes of biopsy-naïve patients who underwent FPB. Material and methods The study included 400 biopsy-naïve patients aged 45-75 years who had a prostate-specific antigen (PSA) level of 2-10 ng/ml and were detected with a Prostate Imaging-Reporting and Data System (PIRADS) ≥3 lesion on multiparametric prostate magnetic resonance imaging (mpMRI)-guided FPB. A combined biopsy (CB) was performed in each patient, in which 2-4 cores were obtained for suspicious lesions by targeted biopsy (TB) and then 12-core standard prostate biopsy (SPB) was conducted in the same session. Cancer detection rates, clinically significant prostate cancer (csPCa) detection rates, histological upgrading rates, and false negative rates were determined. Results The 400 patients had a mean age of 62.01±7.00 years and a mean PSA value of 6.84±1.87 ng/ml. Overall PCa detection rate was 50% (200/400). The csPCa detection rates for TB, SPB, and CB were 25.0%, 31.8%, and 44.0%, respectively (p<0.001). In PIRADS 3, 4, and 5 lesions, CB had a csPCa detection rate of 29.2%, 54%, and 64.8%, respectively (p<0.001). The ratio of false negativity was significantly higher for TB compared to SPB (43.2% vs. 27.8%, p=0.003), whereas no significant difference was found between these two techniques with regard to upgrading rates although TB had a higher rate (19.6% vs. 13.7%, p=0.144). Conclusion FPB, a combined approach involving TB and SPB, was revealed as the most successful technique in biopsy-naïve patients with PSA<10 ng/ml due to its high cancer detection rates and low false negative rates.

The ectopic ureter opening into the vulva, which is a rare cause of lifelong urinary incontinence: Treatment with ureteroureterostomy.

Persistent urinary incontinence (UI) in adults may indicate a congenital anomaly. Before initiating medical treatment in these patients, a detailed physical examination is necessary for establishing an accurate diagnosis. In this study, we report on a patient who presented with the complaint of congenital UI associated with ectopic ureter and was detected with a right complete duplex collecting system and a ureter opening into the vulva and the surgical treatment applied to that patient.

Symptomatic paraganglioma of the urinary bladder: A rare case treated with a combined surgical approach.

Pheochromocytomas are tumors of the embryonic chromaffin cells, originating from the embryonic neural crest. The pheochromocytomas developing at extra-adrenal locations are termed paragangliomas, which are extremely rare and account for almost 0.06% of all bladder tumors. In this report, we present a 23-year-old woman who presented with a one-year history of repeated episodes of dizziness, hypertension, intermittent hematuria, and nausea/vomiting that occurred during urination and was operatively treated due to a diagnosis of paraganglioma of the urinary bladder.

A Rare Case of Partial Unilateral Corpus Cavernosum Agenesis With Concomitant Multiple Genitourinary Anomalies.

Congenital penile agenesis is a rare condition with an incidence of 1 in 30 million, while other congenital malformations of the cavernous bodies are much less common. In a few cases in the literature, it has been reported that the reason for consulting a physician with these conditions is the insufficient erection. As a first reported case, we present a 16-year-old male patient with partial unilateral corpus cavernosum agenesis accompanying genitourinary anomalies.

Effectiveness and complications of mini-percutaneous nephrolithotomy in children: one center experience with 232 kidney units.

OBJECTIVE: To evaluate the efficacy and complications of mini-percutaneous nephrolithotomy (PCNL) surgery using 14-20 Fr access sheaths in pediatric patients, as well as the results of postoperative stone analysis and metabolic urine analysis. MATERIAL AND METHODS: We retrospectively evaluated the records of 206 pediatric patients (232 kidney units) who underwent mini-PCNL for kidney stones in our clinic between February 2011 and December 2018. We evaluated the demographic characteristics, complications, stone-free rates, and the results of chemical analysis and urinary metabolic analysis. RESULTS: The age ranged from 9 months to 16 years. The mean age was 5.1±3.9 years, and the median age was 3.5 years. The median stone burden was 200 mm2 (min: 100; max: 1600). Kidney stones were most commonly located in the pelvis in 118 (50.9%) patients, followed by lower calyceal stones in 42 (18.1%) and multiple calyceal stones in 38 (16.4%) patients, respectively. While the success of mini-PCNL was 80.6% after the first session, this rate increased to 87.9% after auxiliary treatments. The total complication rate was 12.9% according to modified Clavien classification. A postoperative stone analysis showed that calcium oxalate had the highest frequency with 61.1% of patients, followed by cystine stone with 21.3% of patients. Metabolic urine analysis revealed no abnormalities in 42.8% of patients. The most common metabolic abnormality was hyperoxaluria (32%), followed by hypercalcuria (19.6%). CONCLUSION: Mini-PCNL is a safe and effective procedure with reasonable complications for the treatment of pediatric kidney stones. All kinds of multidisciplinary efforts are required to remove kidney stones completely in pediatric patients.