The role of diffusion-weighted MRI and contrast-enhanced MRI for differentiation between solid renal masses and renal cell carcinoma subtypes.

Purpose: To assess the value of diffusion-weighted magnetic resonance imaging (DW-MRI) and contrast-enhanced MRI (CE-MRI) for differentiation between benign and malignant solid renal masses, renal cell carcinoma (RCC) subtypes, oncocytomas, and lipid-poor angiomyolipomas (LP-AML).

Methods: Minimum or lowest 'apparent diffusion coefficient' (ADC) and representative ADC values (ADC) of 112 renal masses (n: 46 benign renal mass, n: 66 malignant renal mass) were measured on DW-MRI images (b 50, 400, 800 s/mm). Signal intensity (SI) measurements were performed in normal renal parenchyma and most avid enhanced area of the renal masses at precontrast, corticomedullary, and nephrographic phases on CE-MRI.

Multi-center evaluation of oxidation-reduction potential by the MiOXSYS in males with abnormal semen.

According to the World Health Organization (WHO), oxidative stress (OS) is a significant contributor to male infertility. Seminal OS can be measured by a number of assays, all of which are either costly or time sensitive and/or require large semen volume and complex instrumentation. One less expensive alternative is to quantify the oxidation-reduction potential (ORP) with the MiOXSYS.

Value of Shear Wave Elastography for differentiating benign and malignant renal lesions.

Aims: To investigate the diagnostic accuracy of shear-wave elastography (SWE) for assessing malignant and benign kidneymasses.

Materials And Methods: Forty patients with solid renal masses underwent US elastographic evaluation. SWE values of the lesions and adjacent cortical renal parenchyma and SWER were detected prospectively.

Roles of Signal Transducer Pathways in Investigation of Biopsies from Patients with Bladder Tumors.

Background:The process of development of bladder cancer features alteration of normal biological conditions caused by changes in molecular pathways. Removing control over regulation of these pathways could lead to changes in signal transduction and abnormal regulation of genes. During tumor formation and progression, genes regulate critical cellular processes, involved in cell cycling, growth and death.

The role of ultra-mini percutaneous nephrolithotomy in the treatment of kidney stones.

Objective: In our study we aimed to evaluate outcomes of ultra-mini-percutaneous nephrolithotomy (UMP) performed for the treatment of kidney stones.

Material And Methods: Between October 2014 and September 2015, a single surgeon performed UMP on a total of 49 consecutive patients with symptomatic kidney stones at our center. Pregnants, anticogulant users, patients with bleeding diathesis pyonephrosis, and partial/complete staghorn stones were excluded from the study.

Combined micro-and standard percutaneous nephrolithotomy for complex renal calculi.

Objective: We aimed to present the technique of combination of standard percutaneous nephrolithotomy (PNL) with microperc for achieving higher success rates without increasing complication rates in the management of complex renal calculi.

Material And Methods: The patients who underwent microperc procedure as a complementary procedure to standard PNL for complex kidney stones in two reference hospitals between 2013 and 2015, were evaluated retrospectively.

Results: All patients underwent a total of two accesses one for standard PNL and one for microperc.

Comparison of Scoring Systems in Pediatric Mini-Percutaneous Nephrolithotomy.

Objective: To apply urolithiasis scoring systems to the pediatric miniperc procedure and to compare their predictive capability for postoperative outcomes.

Materials And Methods: Records from 2 referral centers of patients under 18 years of age who had the miniperc procedure between 2010 and 2015 were retrospectively investigated. All patients included in the study were graded by the same surgeon according to Guy's and Clinical Research Office of the Endourological Society (CROES) scoring systems using preoperative imaging methods.

A Modified Antegrade Stenting Technique for Laparoscopic Pyeloplasty in Infants and Children.

Objective: There are 2 critical steps of stent placement during laparoscopic pyeloplasty (LP) in children. Introduction to the ureteropelvic junction and passing through the ureterovesical junction. We aimed at overcoming those 2 steps by creating a modified technique.

Comparison of miniaturized percutaneous nephrolithotomy and flexible ureterorenoscopy for the management of 10-20 mm renal stones in obese patients.

Purpose: To evaluate and compare effectivity and safety of flexible ureteroscopy (F-URS) and mini-percutaneous nephrolithotomy (mPNL) for 10-20 mm renal stones in obese patients.

Methods: Between 2012 and 2015, charts of patients who were treated with F-URS or mPNL for 10-20 mm kidney stone(s) were analyzed. Patients with BMI > 30 kg/m(2) were enrolled into the study.

Comparison of transperitoneal laparoscopic nephrectomy outcomes in atrophic and hydronephrotic kidneys.

Objective: To compare the results of transperitoneal laparoscopic nephrectomy in patients with atrophic and hydronephrotic kidneys.

Material And Methods: Clinical data were collected from 35 patients who had undergone laparoscopic nephrectomies for atrophic or hydronephrotic non-functioning kidneys between January 2010 and March 2014. Comparative analysis was carried out between the two groups examining demographic characteristics, imaging modalities, etiology, operative times, port numbers, conversion to open surgery, complications, pre-and post-operative hemoglobin and creatinine values, transfusion rates and length of hospital stays.

Flexible ureterorenoscopy results: Analysis of 279 cases.

Objective: In this study, the outcomes of 279 cases in whom we performed retrograde intrarenal surgery (RIRS) were evaluated retrospectively.

Material And Methods: RIRS was performed on 279 cases with the aid of access sheath of guidewire between March 2011 and February 2015. All patients were operated in the standard lithotomy position.

Comparison of microperc and mini-percutaneous nephrolithotomy for medium-sized lower calyx stones.

The objective of this study was to present the outcomes of comparative clinical study of microperc versus mini-percutaneous nephrolithotomy (mini-PNL) in the treatment of lower calyx stones of 10-20 mm. Patients with lower calyx stones treated with microperc (Group-1) or mini-PNL (Group-2) between 2011 and 2014 were retrospectively analyzed. Demographics of the patients were compared, including age, gender, BMI, stone size, laterality and procedural parameters (operation and fluoroscopy time), and outcomes (success and complication rates).

A Comparison of 2 Percutaneous Nephrolithotomy Techniques for the Treatment of Pediatric Kidney Stones of Sizes 10-20 mm: Microperc vs Miniperc.

Objective: To compare outcomes of micro-percutaneous nephrolithotomy (PNL; microperc) with mini-PNL (miniperc) in the treatment of pediatric renal stones of sizes 10-20 mm.

Materials And Methods: Patients aged <18 years who underwent PNL for renal stones of sizes 10-20 mm between August 2011 and March 2014 in 3 referral centers were reviewed retrospectively. Patients were evaluated in the following 2 groups: microperc (group 1) and miniperc (group 2).

A prospective, randomized trial to evaluate the efficacy of clean intermittent catheterization versus triamcinolone ointment and contractubex ointment of catheter following internal urethrotomy: long-term results.

Purpose: Our aim was to evaluate clean intermittent catheterization (CIC) results in combination with triamcinolone ointment and contractubex ointment for lubrication of the catheter after optical internal urethrotomy (OIU).

Methods: Ninety patients who underwent OIU were randomized into three groups. Two weeks after operation, patients were treated with CIC (group A), triamcinolone ointment CIC (group B), and contractubex ointment CIC (group C).

Protective effects of erdosteine, vitamin E, and vitamin C on renal injury induced by the ischemia-reperfusion of the hind limbs in rats.

Background/aim: To compare the protective efficacy of erdosteine and vitamins C and E against renal injury caused by hind limb ischemia-reperfusion (I/R).

Materials And Methods: Rats were split into 4 groups: group I as the control, group II as I/R, group III as I/R + erdosteine, and group IV as I/R + vitamins C and E. Superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px) activities and malondialdehyde (MDA) tissue levels were determined.

Comparison of flexible ureterorenoscopy and micropercutaneous nephrolithotomy in the treatment for moderately size lower-pole stones.

Purpose: To present a retrospective comparative clinical study of micropercutaneous nephrolithotomy (microperc) versus flexible ureterorenoscopy (F-URS) in treatment of moderate-size lower-pole stones (LPSs).

Methods: We retrospectively reviewed data on patients with isolated LPSs ≤2 cm in diameter treated with F-URS and/or microperc in two referral centers. Patients were divided into two groups by treatment modality: F-URS (Group 1) and microperc (Group 2).

Is micro-percutaneous nephrolithotomy surgery technically feasible and efficient under spinal anesthesia?

The objective of the study was to present the clinical and operative effects of two types of anesthesia on micro-percutaneous nephrolithotomy ("microperc"). We retrospectively reviewed 116 patients who underwent microperc between August 2011 and September 2013. Patients were sorted into one of the two groups according to the type of anesthesia received: general (Group 1, n:53) or spinal (Group 2, n:63).

Does aging affect the outcome of percutaneous nephrolithotomy?

To investigate whether aging affects surgical outcomes by comparing the results of two patient groups undergoing PNL: those over 60 and those under 60. A retrospective screen was made for patients undergoing conventional PNL surgery for renal stones performed in two separate centers between 2010 and 2013. 520 patients included were classified into age groups: patients aged 18-59 comprised Group-1 and those aged over 60 comprised Group-2.

Factors affecting outcomes of percutaneous nephrolithotomy in horseshoe kidneys.

Objective: To analyze the patient- and procedure-related factors affecting the outcomes of percutaneous nephrolithotomy (PNL) in horseshoe kidneys (HSKs).

Methods: A retrospective analysis was done of patients with stones in HSKs treated with PNL in 3 referral centers between 1998 and 2013. Demographics, along with perioperative characteristics, were evaluated in detail as to whether or not they had an effect on the success and complication rates.

Reduced radiation fluoroscopy protocol during retrograde intrarenal surgery for the treatment of kidney stones.

Purpose: To discuss whether fluoroscopic imaging is essential during the ureteroscopic treatment of kidney stones in an effort to diminish radiation exposure.

Materials And Methods: Seventy-six patients with kidney stones were treated with retrograde intrarenal surgery (RIRS). In the operation room, a mobile C-arm fluoroscopy system was ready to use in case fluoroscopic imaging was needed.

Endoscopic guided additional access for staghorn calculi.

Background And Purpose: Flexible nephroscopy is an important technique in the management of staghorn renal calculi to reach peripheral calices. In this study, we present our experience with flexible nephroscopy and fluoroscopy-guided additional access creation for staghorn renal calculi.

Patients And Methods: We conducted a retrospective analysis of patients with staghorn renal calculi who were treated with multiple percutaneous renal tracts created with the guidance of flexible nephroscopy and fluoroscopy.

Laparoscopic decortication of hilar renal cysts using LigaSure.

Background And Objectives: In this study, we evaluated the safety and efficacy of using the LigaSure sealing system (Valleylab, Boulder, Colorado) for laparoscopic decortication of symptomatic hilar renal cysts.

Methods: Seventeen patients underwent laparoscopic decortication of hilar renal cysts with the LigaSure system. Our study included only symptomatic, Bosniak type 1, simple and symptomatic renal cysts.

Comparison of intrarenal pelvic pressure during micro-percutaneous nephrolithotomy and conventional percutaneous nephrolithotomy.

The micro-percutaneous nephrolithotomy (microperc) is a recently introduced percutaneous nephrolithotomy (PNL) technique that is performed through a 4.8 Fr all-seeing needle. We aimed to measure the intrarenal pelvic pressure (IPP) during microperc and compare it with the levels of conventional PNL.

Prostatic fluid free insulin-like growth factor-1 in relation to benign prostatic hyperplasia: a controlled study.

Purpose: Insulin-like growth factors (IGFs) have potent mitogenic and antiapoptotic effects on prostate tissue, whereas free IGF-1 is responsible for its metabolic effects but its role in benign prostatic hyperplasia (BPH) is unclear.

Material And Methods: Plasma and prostatic fluid levels of free IGF-I were determined from the fasting bloods of 35 BPH cases admitted for treatment and 35 randomly selected population controls.

Results: Prostatic fluid free IGF-1 concentrations did not differed significantly between two groups (P = .