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OBJECTIVE To evaluate the factor age at the surgery on long-term postoperative outcomes in patients with postprostatectomy incontinence (PPI) after AdVance XP transobturator male sling implantation. METHODS A total of 115 male patients with PPI, who had undergone AdVance XP sling implantation, were included. Patients had PPI with endoscopically confirmed good sphincteric-contractility and a positive coaptive response. Kruskal-Wallis test with Dunn post-hoc tests were used to analyze the postoperative outcome differences between the patient groups aged less than 66, 66-75, and over greater than 75 years. Outcome measures were the 24 h pad test, the number of daily pads used, the International Consultation on Incontinence Questionnaire short form (ICIQ-SF), International Quality of Life Score (IQOL), Patient Global Impression of Improvement (PGI-I), International Index of Erectile Function-5 (IIEF-5), International Prostate Symptom Score (IPSS), and Visual Analog Scale scores. Observation time points were 3, 6, 12, 24, 36, 48, 60, and 84 months after surgery. RESULTS Between the age groups, there was no difference in the success rate of the procedure (defined as 0 pads/24 h and less than 5 g in the 24-h pad test) at any point in time. Subjective parameters measures using the ICIQ-SF, PGI-I, IQOL, and IPSS scores showed no differences between the two cohorts. Only erectile function (IIEF-5 score) was lower in older patients in comparison to the cohort aged less than 66 years (p

Objective: The aim of this study was to assess the security, value, and efficacy of the second-generation AdVance male sling XP (Boston Scientific®), after implementation in 2010 with advantageous modifications in the sling structure and needle shape, in a prospective multicenter long-term follow-up study. Methods: In total, 115 patients were included. Exclusion criteria were earlier incontinence (UI) surgery, nocturnal UI, former radiotherapy, or night-time incontinence. We also excluded patients with a functional urethra Results: The 24-month follow-up (114 patients) revealed 64.0% cured and 28.8% improved patients. Mean urine loss was reduced significantly to 19.0 g (p < 0.001). A mean PGI score of 1.5 and a mean VAS score of 0.2 were obtained. The 60-month follow-up (59 patients) revealed 57.6% cured and 25.4% improved patients. Mean urine loss was reduced significantly to 18.3 g (p < 0.001). A mean PGI score of 1.6 and a mean VAS score of 0.2 were obtained. Conclusions: The AdVance XP displays excellent continence results and secure effectiveness over a 5-year period. Moreover, these data are demonstrating low complication rates and improved quality of life in the long-term use of AdVance XP.

ZusammenfassungStatistisch gesehen sind weltweit mehr als 7 Mio. Menschen von einer Rückenmarkverletzung, darunter 2,7 Mio. von einer manifesten Querschnittslähmung, betroffen. In Österreich sind etwa 50.000 Patienten ausschließlich durch die Hilfe eines Rollstuhls mobil, davon sind etwa 4000 von einer Querschnittslähmung betroffen. Die Betreuung dieser Patienten stellt in der Praxis oft eine besondere Herausforderung dar. Große Bedeutung wird der Nachsorge beigemessen, die aufgrund spezieller Begleitumstände und der Komplikationsgefahren immanent wichtig ist. Aus urologischer Sicht ist eine neurourologische Betreuung unerlässlich. Dabei verändern sich die Therapieoptionen nach dem Maß des Verletzungsniveaus und sind zugleich geschlechterspezifisch. In diesem Artikel wird über die urologischen Aspekte der Versorgung von Frauen diskutiert, die von einer hohen Querschnittslähmung (Tetraplegie) betroffen sind.

OBJECTIVE To evaluate the efficacy and safety of the AdVance XP male sling in a midterm follow-up for the treatment of male urinary incontinence in a selected patient cohort. MATERIALS AND METHODS In all, 115 patients with postprostatectomy incontinence were prospectively enrolled. A previous endoscopic evaluation of a sufficient coaptive zone in the repositioning test was mandatory. Patients with urine leakage in supine position or previous incontinence surgery were excluded. Postoperatively a standardized 24-hour pad test and pad usage were evaluated. To compare pre- and postoperative continence status nonparametric t test was used. A P-value of

The adjustable transobturator male system (ATOMS) treats post-prostatectomy urinary incontinence by compression of the proximal bulbous urethra. It reminds of the Kaufman prosthesis described in 1978. We describe a case where an excessive fibrotic reaction occurred around the cushion. Furthermore, the bulbous urethra underneath, developed severe atrophy devoid of any visible blood supply. We suspect ongoing shear forces around the cushion while sitting resulting in a chain reaction of acute through chronic inflammation and progressive fibrosis and encapsulation. Does the encapsulation lead to capsular contracture resulting in non-function?

A failed end-to-end anastomosis after membranous urethral distraction injury post-trauma is a surgical challenge. We present a case of a young man after complex pelvic injury. Revision urethroplasty was done utilizing nerve and vessel sparing techniques. Intrasphincteric dissection enabled bulbous urethral pull-through with intrapelvic anastomosis with good success. Low dose tadalafil was given to optimize penile rehabilitation.

Bladder neck closure after severe polytrauma with an absent urethra poses a huge challenge for a young woman wanting to urinate normally. Considerations are reconstruction of a neourethra and operative means to gain continence. We describe a case of trigonal tubularization to function as a neourethra, together with the implantation of an artificial urinary sphincter. Eleven years after suffering from an open book pelvic rim fracture at 18 years, successful reconstruction of a trigonal neourethra enabled continence and residual-free spontaneous voiding at 29 years.

Aggressive angiomyxoma is a rare mesenchymal neoplasm, occurring mainly in females. It is located in the pelvis and perineum, with known metastasis and hormone sensitivity only in females. Local recurrence is relatively common. We describe the case of a 62-year-old man who presented with symptoms and signs of a spermatocele. Scrotal exploration with surgical excision of the lesion was done. Because a benign setting was assumed, no radical inguinal orchiectomy was performed. The specimen sent to pathology confirmed an aggressive angiomyxoma with positive resection margins. Despite the plurality of benign scrotal masses such as spermatoceles or hydroceles, rare neoplasms should always be kept in mind. Hence, complete excision should be performed whenever possible. We selected an active surveillance strategy despite positive margins, since there is no described case of metastasis in men to date. Therefore, regular scrotal ultrasound examinations every 3 months were arranged as follow-up.

Background A supernumerary kidney (SK) is an additional kidney with its own capsule and blood supply that is not fused with the ipsilateral kidney (IK). Because individual case reports indicate a high morbidity rate, the aim of this retrospective study was a detailed analysis of this rare anatomical variant. Methods Our systematic imaging-based search for SKs, conducted in the period from 2000 and to 2017, yielded 9 cases in total (5 men, 4 women; mean age: 51.8 ± 22.8 years). Results The SKs were observed on the right in six and on the left side in three cases. In six subjects (66%) they were located caudal and in three cases (33%) cranial to the ipsilateral kidney. Calculi were found in three (33%) of the renal collecting systems. Five (56%) of the SKs had hydronephrosis grade IV and one SK had recurrent pyelonephritis (11%). Two of the ureters opened into the ipsilateral seminal vesicle (22%). Two (22%) SKs were functional but atrophic. Clinically relevant findings were made in 33% of the IKs: atrophy (n = 2), calculi (n = 1), and reflux with recurrent pyelonephritis (n = 1); another 33% had anatomical anomalies without functional impairment. The correct diagnosis of a SK is possible using CT imaging in all subjects. The prevalence of SK based on CT imaging can be estimated to be 1:26750. Conclusions CT is the method of choice for visualizing SKs. The correct diagnosis is crucial in preventing dispensable surgical procedures and for providing optimal patient treatment and outcome.

Prolonged low-flow priapism causes structural impotence. We describe a case where potency has been preserved by off-centre corporal dilation to spare the cavernosal arteries. The patient suffered from idiopathic priapism lasting more than 72 hours before presentation. Corporoglanular shunts were performed thrice over a period of six days, twice also performing off-centre corporal dilation along the inside of the tunica. The idea was not to damage the central cavernosal arteries. Corporal blood supply spontaneously improved. Successful intercourse was possible after six months. Artery sparing cavernosal dilation techniques might improve spontaneous recovery in select cases. Keywords: Priapism, Corporoglanular shunt, Cavernosal artery sparing dilation, Potency

INTRODUCTION AND OBJECTIVES:In recent years, several studies have shown the effectiveness and safety of the AdVance sling (Boston Scientific, formerly American Medical Systems) for treating male st...

For the treatment of persistent post-prostatectomy incontinence (PPI), several surgical treatment options including male slings are available. In 2010, the second generation of the retrourethral male sling Advance, AdVanceXP, was introduced. Aim of the study was to examine in a prospective multicentre study the outcome of AdVanceXP in the treatment of PPI.Ninety-four patients were treated with AdVanceXP. Patients with nocturnal incontinence, previous incontinence surgery, with coaptive zone1 cm and irradiated patients were excluded. Measurements included: daily pad usage, 24-h pad weight test, post-operative pain in the visual analogue scale, International Quality of Life questionnaire, International Consultation on Incontinence Questionnaire short form, IEEF5 and Patient Global Impression of Improvement. Adverse events were recorded. All patients with no pads and 0-5 g in the 24-h pad test were defined as cured and those with a reduction in urine loss50 % as improved.Preoperatively, the median 24-h pad weight test was 274 g and daily pad usage was 3. At 1-year follow-up, 66.3 % of patients could be classified as cured and 25.3 % as improved. After 2 years, 73.1 % could be classified as cured and 19.6 % as improved. Urine loss decreased (p 0.001), and quality of life improved significantly (p 0.001). Mean PGI was 1.5 after 1 year and 1.4 after 2 years. Majority of complications were minor. No intraoperative complications and five serious post-operative events occurred (grade IIIB complications). No explantation was necessary.AdVanceXP, when correctly indicated, shows good effectiveness and low complication rates after up to 2 years.

To evaluate the efficacy and safety of the AdVance XPIn all, 115 patients were included. Patients with nocturnal UI, previous UI surgery, previous radiotherapy and a coaptive zone of1 cm in the preoperative repositioning test were excluded. Postoperatively, a standardised 24-h pad test, quality-of-life scores [International Quality of Life score (IQOL) and International Consultation on Incontinence Questionnaire short form (ICIQ-UI SF)], visual analogue scale (VAS) for pain, five-item version of the International Index of Erectile Function (IIEF-5), International Prostate Symptom Score (IPSS) and Patient Global Impression of Improvement (PGI-I) score, were performed. All patients with a 0-5 g pad test were defined as cured and improved with a reduction of urine loss of50%. All others were classified as failures. Significance analysis was performed using the Wilcoxon test.The mean (median) preoperative urine loss in the 24-h pad test was 272.0 (272.0) g. After a follow-up of 3 months (114 patients), 64.9% of the patients were cured and 31.6% had an improved continence status. The mean urine loss decreased significantly to 34.9 g (P0.001), with a mean VAS score of 0.5, and mean PGI-I of 1.5. After a follow-up of 24 months (80 patients), 68.8% of the patients were cured and 22.5% had improved. The mean urine loss decreased significantly to 19.1 g (P0.001), with a mean VAS score of 0.3, and mean PGI-I of 1.5. After a follow-up of 36 months (47 patients), 66.0% of the patients were cured and 23.4% had improved. The mean urine loss decreased significantly to 21.8 g (P0.001), with a mean VAS score of 0.0, and mean PGI-I of 1.6. The mean IQOL and ICIQ-UI SF improved significantly (both P0.001) after 36 months. There were no significant postoperative changes in IIEF-5 and IPSS. No intraoperative and no long-term complications occurred. No erosion or explanations occurred.The AdVance XP shows good and stable effectiveness and low complication rates even at a mid-term follow-up of up to 36 months.

To establish a method for estimating the probability of renal artery stenosis (RAS) based on the calcium volume score of the aorta (ACS).In a retrospective observation study, CT angiographies acquired on a 64-slice MDCT scanner were analyzed for 1351 patients (female: 531; male 826; mean age 60.9 ± 17.7 years). A volumetric scoring method was used, detecting plaques with a density of more than 600 HU.13.8% of the patients showed a stenosis50%, 4.1% a stenosis70%. The ACS was 0.61 ± 1.01 ml calcium. The sensitivity for detection of RAS50% and RAS80% was 0.9572 and 1.0, respectively. The negative predictive value (NPV) of a lack of calcification for excluding RAS50% and RAS80% was 0.9752 and 1, respectively. As ACS increased, the specificity for RAS50% increased to 0.9390. With an ACS of 0.380 ml, accuracy reached a maximum of 0.6585. ROC analyses yielded an area under the curve of 0.88 (p0.0001). Sensitivity, specificity, NPV and PPV are indicated in relation to the degree of RAS, as well as the diagnostic yield of the method, which is valuable in patients older than 50 years.Due to its extremely high sensitivity and NPV, the ACS is a very useful screening method for RAS. The validity of the method, as well as its diagnostic value is equivalent to that of coronary artery calcium scoring. Lack of calcifications of the aorta renders atherosclerotic RAS highly improbable.

The AdVance male sling (American Medical Systems, Minnetonka, MN, USA) has been shown to be an efficacious device in short-term studies for postprostatectomy incontinence (PPI), but long-term studies are lacking.Examine the intermediate-term outcome with the AdVance sling for PPI management.A multicentre prospective evaluation was conducted on consecutive patients treated for PPI in three European tertiary reference centres.Patients were implanted with the AdVance male sling with no associated surgery.Measurements included daily pad usage, maximum flow rate (Qmax), postvoid residual urine (PVR), the International Consultation on Incontinence Questionnaire-Short Form, the Incontinence Quality of Life questionnaires, and complications of surgery. Paired Wilcoxon signed rank test univariable and multivariable analyses were used.Follow-up was available for 156 patients for the majority of parameters. Pad usage was significantly decreased compared with baseline at 12 mo and 3 yr (p0.0001). At 12 mo, 76.9% of patients could be classified as cured or improved; this percentage was maintained at 3 yr (76.8%). Cure rates (58.6% vs 42.3%) and improvement rates (23.2% vs 25.0%) were higher in patients with mild or moderate incontinence compared with severe incontinence. Univariable analysis showed that pretreatment pad usage and severity of incontinence were both significant predictors of success (p=0.0355 and p=0.0420, respectively). However, in multivariable analysis, only pad usage was an independent predictor of success. There were no perioperative or severe postoperative complications. Most complications were Dindo grade I. Seven patients required a second treatment for stress urinary incontinence. There was no worsening over time. Limitations of this study included no comparator group, quality of life questionnaires in only two centres, and no 24-h pad test.The transobturator retroluminal repositioning sling suspension is effective and safe in the longer term for treating PPI.

Objective: The incidence of urethral injuries in children is rare due to the fact that the urethra is short, mobile and protected by the pubic bone. The management of urethral trauma in childhood remains controversial because of the limited expertise of most urologists. Material and Methods: We performed a literature review by searching the Medline database for articles published between 1975 and 2010 based on clinical relevance. Electronic searches were limited to the keywords ‘pediatric’, ‘urethral injury’, ‘trauma’ and ‘reconstruction’. Results: Retrograde urethrography is considered the gold standard for diagnosis of urethral injuries. The initial management should ensure drainage of the bladder either by suprapubic cystostomy or urethral realignment if possible: in complete anterior urethral disruption as well as in children with life-threatening pelvic and intra-abdominal injuries after posterior urethral injuries, a deferred repair after 3 months is necessary. Immediate primary suturing of disrupted and dislocated urethral ends should be avoided because of high complication rates. Primary repair, however, of the defect is possible in girls avoiding a 2-stage approach. Conclusion: The aim of therapy is minimizing remote damages such as urethrocutaneous fistulae, periurethral diverticulae, strictures, incontinence and impotence with different therapeutic management depending on classification of the injury and the presence of life-threatening injuries.

The AdVance ® male sling (American Medical Systems, Minnetonka, MN, USA) is a retrourethral transobturator sling that offers an effective surgical approach for the treatment of postprostatectomy stress urinary incontinence (SUI). Clinical studies have demonstrated success rates of 80–90% at 1-yr follow-up. The most appropriate candidate patients for the AdVance ® sling may be those with mild to moderate incontinence, but success rates may not be markedly lower in patients with severe incontinence. Clinical experience with the AdVance ® sling suggests that cystoscopically confirmed residual sphincter function is an important requirement for good outcome. Assessment of SUI should be modified to include a consideration of sphincter function in addition to the currently accepted definitions of incontinence severity (pad weight and number). The AdVance ® male sling may be considered a first-line surgical treatment as well as a salvage treatment for some patients who have failed previous surgical treatment. More data are needed to better understand the patient-related factors that affect the short- and long-term outcomes of this minimally invasive treatment for male SUI.

A number of anatomic components work in concert to produce precise control of micturition in the healthy male, including the sphincter with its striated and smooth muscle components, the surrounding muscular and ligamentous support structures, neural components, and the urothelium. Radical prostatectomy is often associated with injury to one or more of these tissues, culminating in stress urinary incontinence (SUI). Although the causes of urinary incontinence can vary, among patients with residual urethral sphincter function, the increased laxity and reduced functional length of the membranous urethra are thought to play key roles in incontinence. Most surgical treatments for urinary incontinence, such as the artificial urinary sphincter and various slings, achieve continence via compression of the urethra, but the AdVance ® transobturator retrourethral sling (American Medical Systems, Minnetonka, MN, USA) repositions the urethral sphincter complex back into the pelvis and increases the functional membranous urethral length. Emerging reports on the AdVance ® sling suggest favourable cure rates and few complications. Thus, the AdVance ® sling provides an alternative approach to treating postprostatectomy SUI that is both less obstructive and more dynamic.

Aim: Prostate biopsies are usually done with transrectal ultrasound (TRUS) in B-mode (B TRUS) but multiparametric MRI (mpMRI) is the gold imaging standard for the visualization of clinically significant prostate cancer (PCa), since a lowPCa detection rate is reported for B TRUS. The aim of this study was to assess the visibility of MRI lesions on B TRUS and to determine which factors may influence the visibility on B TRUS.Material and methods: 142 men with 148 lesions reported on mpMRI underwent a B TRUS/mpMRI fusion targeted biopsy of the prostate and were included in this retrospective study. During the biopsy, images were obtained and stored in the institution’s PACS. These images were reviewed by two radiologists to determine, whether an mpMRI lesion was or was not visible on B TRUS.Results: Overall 92 from 148 mpMRI lesions (62.2%) were visible on B TRUS. The location of the lesion in the prostate, the PIRADS classification of the lesions and the size of the lesion had no significant influence on the visibility on B TRUS. Only the prostate volume had a significant influence on visibility: in smaller prostates significantly more lesions were visible on B TRUS than in large glands (p+0.041; 45.1 ml vs 54 ml).Conclusion: The use of newer high-end ultrasound units as well as experience gained from fusion biopsies enables us to see 62.2 % of all suspicious mpMRI lesions on B TRUS. B TRUS images merit a thorough examination during a conventional biopsy setting.

Study Type – Therapy (outcomes research) Level of Evidence 2c OBJECTIVE To evaluate the efficacy and safety of a transobturator retroluminal repositioning sling suspension in the treatment of male stress urinary incontinence (SUI) after prostate surgery. PATIENTS AND METHODS In 118 men with SUI after prostatic surgery, a transobturator retroluminal repositioning sling suspension was implanted. Patients were evaluated including: complete history and physical examination, 24-h pad test, a questionnaire (International Consultation on Incontinence Questionnaire, Short-Form), urodynamic evaluation and endoscopy. The surgical technique was described previously. The findings before and at 1 year after sling placement were compared. RESULTS At the 12-month follow-up, 73.7% of the men were cured, 16.9% were improved, and 9.3% were still incontinent. After sling placement the daily pad use decreased significantly (P < 0.001), while the ICIQ-SF improved significantly (P < 0.01). The detrusor voiding pressure, postvoid residual urine volume and maximal flow rates remained unchanged, while the Valsalva leak-point pressure improved significantly (P < 0.01). In 19.5% of the men, there was transient scrotal pain or perineal discomfort. In 5.1% of the men, postoperative urinary retention occurred but resolved spontaneously after a few weeks of catheter placement. In 1.7% of the men adductor pain was reported, which resolved spontaneously. There were no major complications. CONCLUSION The transobturator retroluminal repositioning sling suspension for the treatment of male SUI is effective and safe with a low complication rate after 1 year of follow-up.

OBJECTIVE • To evaluate the success of endoscopic dextranomer/hyaluronic acid copolymer (DHAC) application in the treatment of patients with recurrent urinary tract infections (UTIs) and vesico-ureteric reflux (VUR) into the transplanted graft after renal transplantation. PATIENTS AND METHODS • Between January 2008 and April 2009, 19 patients with recurrent UTIs presented VUR proven by voiding cystourethrography. • To correct VUR of the transplanted ureter, DHAC was injected endoscopically using hydrodistention technique. • Pre- and postoperative serum creatinine levels, the number of pre- and postoperative UTIs, postoperative complications and reflux resolution rate were recorded. The mean follow-up was 6.5 months. RESULTS • The average number of UTIs was reduced significantly from 4.89 (range 2-14) to 1.31 (range 0-4) on pre- and postoperative follow-up, respectively, of 6 months (P < 0.001). The success rate increased from 57.9% after the first injection to 78.9% after the second injection. • The remaining four patients with residual VUR received long-term low dose antibiotic prophylaxis. In total, two (10.5%) patients developed increasing creatinine levels postoperatively as a result of distal ureteral obstruction, and temporary urinary drainage was necessary in both patients. CONCLUSIONS • DHAC appears to be an efficient and minimal invasive method for treating VUR after renal transplantation with respect to short-term success. • Further investigation with a larger group of patients and longer follow-up is needed to evaluate the prolonged effect, as well as any potential side effects.

Study Type – Diagnosis (exploratory cohort) Level of Evidence 2b OBJECTIVE To correlate a subjective blood-flow rating scale from contrast-enhanced colour Doppler (CECD) transrectal ultrasonography-targeted prostate biopsy with the histopathological outcome of the biopsy. PATIENTS AND METHODS In all, 760 men with a serum total prostate-specific antigen (PSA) level of ≥1.25 ng/mL and a free-to-total PSA ratio of

Study Type – Therapy (case series) Level of Evidence 4 OBJECTIVE To report a new dorsal labia minora skin-graft urethroplasty as a simple, safe and effective therapeutic alternative for female urethral strictures, as although distal urethral strictures can be treated by meatoplasty, proximal and mid-urethral strictures need appropriate urethroplasty. PATIENTS AND METHODS Eight women with a confirmed proximal or mid-urethral stricture had indications for urethroplasty with the use of a thin free labia minora skin graft using a dorsal (6 o’clock position) urethroplasty technique. Full informed consent was obtained. From the inner aspect of one labium minora a thin free skin flap was prepared. The strictured urethra and the anterior vaginal wall were transected and the graft sutured into the defect. All scar tissue was removed and the anterior vaginal wall closed in two layers over the area of the urethroplasty. Continence was evaluated by a stress test with a full bladder. RESULTS All patients were operated on with no complications during or after surgery. After 1 and 2 years of follow-up seven and six of the eight patients had no recurrence of stricture disease. All patients remained continent. CONCLUSION The urethroplasty using an inlay of free thin genital skin graft was safe, uncomplicated and effective.

Ultrasound is a widely used imaging modality for evaluation of the prostate. The main topic of diagnostic imaging is an improvement of prostate cancer diagnosis. The current available systematic prostate biopsy is performed only under ultrasound guidance, but new imaging techniques allow prostate cancer visualization and therefore improved detection. Evolving methods such as contrast-enhanced colour Doppler imaging, contrast-specific ultrasound techniques and elastography may dramatically change the role of ultrasound for prostate cancer diagnosis. The purpose of this review is to provide an overview of ultrasound and its different techniques for imaging of the prostate and to discuss current trends and future directions.

Purpose: To compare the detection of urinary stones using standard gray scale ultrasound for diagnostic accuracy using the color Doppler "twinkling sign". Material and Methods: Our study population consisted of forty-one patients who demonstrated at least one urinary stone on unenhanced CT evaluation of the kidneys or ureters. Each patient was evaluated using gray scale ultrasound and color Doppler imaging by an observer who was blinded to the CT results. Results: Seventy-seven stones were present in 41 patients, including 47 intrarenal stones, 5 stones in the renal pelvis, 8 stones at the ureteropelvic junction, 5 ureteral stones and 12 stones at the ureterovesical junction. Based upon gray scale sonography the diagnosis of stone was made with confidence in 66% (51/77) of locations. Based upon Doppler sonography using the twinkling sign, the diagnosis of stone was made with confidence in 97% (75/77) of locations. Clustered ROC analysis demonstrated that the Doppler twinkling sign (Az = 0.99) was significantly better than conventional gray scale criteria (Az = 0.95) for the diagnosis of urinary stones (p = 0.005, two-sided test). Conclusions: The color Doppler twinkling sign improves the detection, confidence and overall accuracy of diagnosis for renal and ureteral stones with minimal loss of specificity.