Primary vesicoureteral reflux mediated renal scarring after urinary tract infection in Thai children

AIM: To evaluate the association between primary vesicoureteral reflux (VUR) and renal scarring in children using 99 m Technetium-labelled dimercaptosuccinic acid (DMSA). METHODS: Children attending at Songklanagarind Hospital from 1987 to 2002 were evaluated. RESULTS: Ages at diagnosis of VUR in 46 boys and 52 girls were 1.1+/-1.6 and 2.9+/-2.5 years, median 0.6 and 2.3 years, respectively (P<0.001). DMSA scans were performed at 4.1+/-3.6 years. Renal parenchymal damage was detected in 34 kidneys (22%) of 154 demonstrated refluxing ureters, and one kidney (2%) of 42 non-refluxing ureters (P=0.002). Of 79 refluxing ureters in boys and 75 refluxing ureters in girls, there were 25 and nine renal scars, respectively (32% and 12%, P=0.003). Renal scars in VUR grades I-V were 11%, 7%, 12%, 44% and 64%, respectively (P<0.001). Multivariate analysis revealed that high grade VUR (P<0.001), age of diagnosis of VUR greater than 5 years (P=0.001), and male gender (P=0.002) were the most significant risk factors for renal scarring. CONCLUSION: High-grade VUR, age of diagnosis of VUR greater than 5 years and male gender were the most significant risk factors for renal scarring.     

Minimally invasive extravesical ureteral reimplantation for vesicoureteral reflux

PURPOSE: We designed a new extravesical ureteral reimplantation technique with a minimally invasive approach from skin to ureterovesical junction with less perivesical tissue manipulation to avoid extensive bladder denervation. MATERIALS AND METHODS: Between July 1996 and December 2000, 37 boys and 52 girls 1.2 to 10.8 years old (mean age plus or minus standard deviation 3.8 +/- 2.5) (113 ureters) were treated with minimally invasive extravesical ureteral reimplantation. Vesicoureteral reflux was graded I to V in 8, 12, 43, 29 and 21 cases, respectively. The technique involves an approximately 10 to 15 mm. incision passing through the small triangular gap of the aponeurosis of the external abdominal oblique muscle and transversalis fascia to the point of the ureterovesical junction. The surgical field was exposed with mini-retractors and fine dissecting instruments were used to avoid unnecessary tissue manipulation. RESULTS: At postoperative followup 1 patient had persistent grade II reflux and 2 had moderate hydronephrosis and hydroureter, which resolved after 18 months. No patient returned due to voiding inefficiency or for pain control after discharge from the outpatient setting. CONCLUSIONS: This new technique can be easily used for vesicoureteral reflux with the advantages of simple intervention for surgeons, especially those with inguinal herniorrhaphy and antireflux surgery experience, and less wound discomfort for patients. The whole procedure can be performed on an outpatient basis. However, the decision to use this technique should be based on individual consideration.     

A new endoscopic ureteral reimplantation for primary vesicoureteral reflux (endoscopic trigonoplasty II)

PURPOSE: We describe a new technique of endoscopic antireflux surgery. The principle of the procedure is to make a reliable muscular backing and elongate the intramural ureter. MATERIALS AND METHODS: We performed this new endoscopic surgery in 8 female patients in whom 4, 1, 8 and 1 refluxing ureters (total 14) were diagnosed with grades I to IV reflux, respectively. The operation consists of 3 steps. Two 5 mm. locking trocars are placed into the bladder. Irrigation is done with 3% D-sorbitol solution and the bladder wall is incised upward along each side of the ureter using a resectoscope to make a 2 to 3 cm. U-shaped bladder flap, including the ureter. Under pneumobladder the incised muscle is sutured to make a muscular bed with a needle holder via the urethra and forceps via the abdominal trocar. The U flap is fixed with 2 distal anchor sutures on the embedded muscular layer and 4 additional sutures are placed to approximate the mucosa of the U-shaped flap and bladder. RESULTS: Mean operative time was 245 minutes. Ureteral injury occurred in 2 patients. A Foley catheter remained indwelling for 3 to 5 days (mean 4.1). Reflux resolved in 12 of the 14 ureters (86%) 12 months postoperatively. Vesicoureteral reflux persisted in 1 case because of insufficient fixation and recurred in 1 because of ureterovesical fistula. The patients were satisfied with better cosmesis and minimal postoperative discomfort. CONCLUSIONS: We believe that procedure is feasible for female patients with primary vesicoureteral reflux.     

输尿管膀胱再植术对患侧肾功能的影响

目的：探讨输尿管膀胱再植术对患侧肾功能的影响。方法：回顾性筛选分析手术前后分别行ECT肾小球滤过率（GFR）测定，对侧肾输尿管正常，膀胱或肾无其他病变的输尿管膀胱再植术患者临床资料。结果：在33例符合筛选条件患者中，Cohen-Ahmed术式26例，Politano-Ledbetter术式5例，Lich-Gregoir术式2例，21例（63．6％）GFR术后近期较术前降低（平均5．3％），结论：大部分输尿管膀胱再植术病例，术后近期，患肾功能轻度受损。     

Positioning the instillation of contrast at the ureteral orifice cystography can be useful to predict postoperative contralateral reflux in children with unilateral vesicoureteral reflux

The aim of the present study was to evaluate the usefulness of positioning the instillation of contrast at the ureteral orifice (PIC) cystography in prediction of postoperative contralateral reflux in patients with unilateral vesicoureteral reflux (VUR) undergoing ureteral reimplantation. Between January 2007 and March 2009, 34 children (20 boys and 14 girls) had antireflux surgery for unilateral primary VUR. This was diagnosed by conventional fluoroscopic voiding cystourethrography (VCUG) in all patients. After induction of general anesthesia, PIC cystography was carried out immediately before ureteral reimplantation by instilling contrast material at the ureteral orifice. Patients with positive PIC cystogram on the contralateral side underwent bilateral ureteral reimplantation via the Cohen technique. VCUG was repeated at 6–12 months postoperatively. Of the 34 patients, 16 (47%) showed VUR on the contralateral side on PIC cystography and underwent bilateral reimplantation. The remaining 18 patients (53%) with negative PIC cystogram underwent unilateral reimplantation, and no VUR was detected by postoperative VCUG in all ureters. None of the 34 patients had surgical complications or recurrent urinary tract infections. In conclusion, PIC cystography represents a useful tool to predict new onset contralateral VUR in patients with unilateral VUR on conventional VCUG.     

Relationship among vesicoureteral reflux, urinary tract infection and renal damage in children

PURPOSE: We studied the relationship among vesicoureteral reflux, urinary tract infection and permanent renal damage in children. MATERIALS AND METHODS: We retrospectively analyzed 303 children younger than 2 years with a first time, nonobstructive, culture verified urinary tract infection. The protocol included ultrasonography and voiding cystourethrography within 3 months after urinary tract infection, and (99m)technetium dimercapto-succinic acid scintigraphy after 1 to 2 years. RESULTS: Vesicoureteral reflux was found in 36 of 163 boys (22%) and in 44 of 140 girls (31%). Of the 303 patients 80 (26%) had permanent renal damage according to dimercapto-succinic acid scintigraphy. The rate of abnormality increased significantly with grade of vesicoureteral reflux in boys and girls. The relative risk of renal damage was significantly increased in patients with vesicoureteral reflux grade II and higher. Maximum C-reactive protein concentration, maximum temperature during urinary tract infection, presence of vesicoureteral reflux and febrile recurrences of urinary tract infection were significantly related to permanent renal damage. In stepwise logistic regression vesicoureteral reflux was the only independent variable for boys, while C-reactive protein and vesicoureteral reflux were independent factors for girls. CONCLUSIONS: There was a significant relationship between grade II vesicoureteral reflux and higher and permanent renal damage in boys and girls. However, while the association between renal damage and vesicoureteral reflux was evident in boys, the role of urinary tract infection and renal inflammation seemed to be equally or more important in girls. These findings support the concept that renal damage is associated with vesicoureteral reflux and is often congenital in boys, while in girls it is more related to urinary tract infection with vesicoureteral reflux as a reinforcing factor.     

Predictors of renal scar in children with urinary infection and vesicoureteral reflux

We evaluated the predictors of renal scar in children with urinary tract infections (UTIs) having primary vesicoureteral reflux (VUR). Data of patients who were examined by dimercaptosuccinic acid (DMSA) scintigraphy between 1995 and 2005 were evaluated retrospectively. Gender, age, reflux grade, presence/development of scarring, breakthrough UTIs, and resolution of reflux, were recorded. The relation of gender, age and VUR grade to preformed scarring and the relation of gender, age, VUR grade, presence of preformed scarring, number of breakthrough UTIs and reflux resolution to new scarring were assessed. There were 138 patients [male/female (M/F) 53/85]. Multivariate analysis showed that male gender [odds ratio (OR) 2.5], age ≥ 27 months in girls (OR 4.2) and grades IV–V reflux (OR 12.4) were independent indicators of renal scarring. On the other hand, only the presence of previous renal scarring was found to be an independent indicator for the development of new renal scar (OR 13.4). In conclusion, while the most predictive variables for the presence of renal scarring among children presenting with a UTI were male gender, age ≥ 27 months in girls, and grades IV–V reflux, the best predictor of new scar formation was presence of previous renal scarring.     

Urinary calcium excretion in children with vesicoureteral reflux.

BACKGROUND: Renal malformations including vesico-ureteral reflux (VUR) are associated with urolithiasis. However, studies on urinary calcium excretion in children with VUR have not been reported. This study was conducted to find out whether children with VUR have a higher prevalence of hypercalciuria and whether their family members are affected by hypercalciuria and/or urolithiasis. METHODS: We studied the prevalence of hypercalciuria and urolithiasis in 46 children (12 males and 34 females) with VUR and in their parents. RESULTS: Three out of 46 children had renal colic and nine out of 46 exhibited calyceal microlithiasis in the renal sonography. According to Stapleton's criteria, we found that 27 out of 46 children (58.6%) had hypercalciuria. These children were significantly shorter than children with normal calciuria and showed lower values of maximal urinary osmolality. We found no differences in urinary calcium excretion values related to the VUR grading, or to the presence or absence of renal scars, or to whether VUR was still unresolved or already resolved at the time of study. Seventeen out of 27 children with hypercalciuria (63%) had one or both parents affected by hypercalciuria, and there was a history of urolithiasis in six first-degree relatives and in four second-degree relatives (37%). Besides, 10 out of 19 children without hypercalciuria (52.6%) had one or both parents affected by hypercalciuria and there was a history of urolithiasis in three first-degree relatives and in three second-degree relatives (31.6%). Among the 27 children whose parents had hypercalciuria, four had both parents affected, 19 had only the mother affected and in four patients only the father was affected. CONCLUSION: Our results showed that the prevalence of hypercalciuria was greater in paediatric patients with VUR than in the general population. Urolithiasis in patients with VUR had a metabolic origin. Hypercalciuria was inherited as an autosomal dominant trait although with a higher probability to be inherited from the mother.     

Up-regulation of urinary UPIII mRNA levels in vesicoureteral reflux patients: Potential application as a screening test for vesicoureteral reflux

OBJECTIVES: Vesicoureteral reflux (VUR) is the most common congenital urinary tract anomaly. This disease can pose a major threat to the kidneys as twenty percent of patients with endstage renal disease are reported to have VUR. Although genetic studies for uroplakin III (UPIII) have been reported recently, no study has focused on UPIII gene expression in VUR patients. We describe here the up-regulation of UPIII mRNA in exfoliated urinary cells from primary VUR patients. METHODS: A real-time RT-PCR for UPIII mRNA was performed on exfoliated urothelial cells from 18 primary VUR and 38 control samples. UPIII mRNA copies were calculated for each sample. The statistical differences were assessed by the Mann-Whitney U test. Receiver operator characteristic curves were constructed for analysis of the diagnostic values. RESULTS: UPIII mRNA was found to be up-regulated to a greater extent in VUR than in control exfoliated urinary cells (mean +/- SE: 497.0 +/- 178.5 copies vs. 69.0 +/- 10.0 copies, respectively, P < 0.001). In evaluating the measurement of urinary UPIII mRNA as a screening test for VUR, the sensitivity was 77.8% and the specificity was 76.3% by the best diagnostic cutoff point. CONCLUSIONS: This is the first report demonstrating up-regulation of UPIII in mRNA levels in VUR patients. We submit that the quantitative measurement of urinary UPIII mRNA has a potential of developing into the first non-invasive screening test for VUR.     

Screening high-grade vesicoureteral reflux in young infants with a febrile urinary tract infection

Background

The lack of good evidence for improved outcomes in children and young infants with febrile urinary tract infection (UTI) after aggressive treatment for vesicoureteral reflux (VUR) has raised doubts regarding the need for routine voiding cystourethrography (VCUG), and the appropriate imaging evaluation in these children remains controversial.

Objectives

This prospective study aimed to determine whether abnormalities found on acute dimercaptosuccinic acid (DMSA) scan and ultrasound (US) can help indicate the necessity of voiding cystourethrography (VCUG) in young infants.

Methods

For 3.5?years, all infants younger than 3?months presenting with first febrile UTI were prospectively studied. All infants were hospitalized and investigated using US (<3?days after admission), DMSA scan (<5?days after admission), and VCUG (7–10?days after antibiotic treatment) after diagnosis. The association among findings of US, DMSA scan, and VCUG were evaluated.

Results

From 220 infants, there were abnormal results in 136 (61.8%) US and in 111 (50.5%) DMSA scans. By US, ten infants (4.5%) with abscess or structural abnormalities other than VUR were diagnosed. High-grade (III–V) VUR was present in 39 patients (17.7%). The sensitivities for high-grade VUR of renal US alone (76.9%) or DMSA scan alone (82.1%) were not as good as that of the “OR rule” strategy, which had 92.3% sensitivity and 94.3% negative predictive value.

Conclusions

To screen high-grade VUR in young infants with febrile UTI, US and acute DMSA scan could be performed first. VCUG is only indicated when abnormalities are apparent on either US or DMSA scan or both.     

Independent risk factors for renal damage in a series of primary vesicoureteral reflux: A multivariate analysis

Aim:   The aim of this study was to investigate risk factors associated with different extents of renal parenchyma involvement in a paediatric series of primary vesicoureteral reflux (VUR).
Methods:   A total of 549 patients with VUR were analyzed. The variable of interest was renal scar, assessed by technetium-99m dimercaptosuccinic acid scan, and classified into three subtypes: focal scar, multiple cortical scarring and diffuse scars with a contracted renal unit. The multinomial regression model was applied to identify independent variables associated with each subtype of renal damage.
Results:   After adjustment, four variables remained independently associated with a contracted renal unit: reflux grades III–V (odds ratio (OR) = 9.7; 95% confidence interval (CI) = 4.1–21.0), age at diagnosis (OR = 3; 95% CI = 1.6–5.1), unilateral reflux (OR = 2.1; 95% CI = 1.2–3.8), and male sex (OR = 2; 95% CI = 1.1–3.8). Two variables were associated with multiple scars: reflux grades III–V (OR = 13.8; 95% CI = 7.4–26.0) and age at diagnosis (OR = 1.9; 95% CI = 1.2–3.0). Two variables were associated with a focal scar: reflux grades III–V (OR = 7.9, 95% CI CI = 3.8–16.4) and male sex as a protective factor (OR = 0.5; 95% CI = 0.25–1.0).
Conclusion:   Our findings suggest that the development of a contracted renal unit is probably due to congenital malformation, more commonly observed in male infants with high-grade reflux.     

Interleukin-18, CRP and procalcitonin levels in vesicoureteral reflux and reflux nephropathy

Abstract

Background: Some patients with vesicoureteral reflux (VUR) develop reflux nephropathy (RN) and a number of them progress to chronic kidney disease (CKD). However, it is unclear to predict which patient will develop RN and/or CKD. The aim of this study is to evaluate the role of Interleukin-18 (IL-18), C-reactive protein (CRP) and procalcitonin (PCT) as an indicator of RN in VUR. Methods: Ninety-three children aged 3.5–16 years with primary VUR were enrolled. Patients were divided into two groups according to the presence of renal scarring (RS). CRP, PCT, blood urea nitrogen (BUN), serum creatinine (Scr), urinary protein (Up), creatinine (Ucr) and microalbumin (Umalb), serum and urine IL-18 levels were determined during urinary tract infection (UTI) free episode. Results: BUN, Scr, Up/Ucr and Umalb/Ucr concentrations were higher whereas calculated creatinine clearance (Ccr) values were lower in RS (+) group compared to RS (?) group. CRP, PCT, serum and urine IL-18 levels and mean urine IL-18/Cr concentrations were similar in both groups. Serum and urine IL-18 levels did not differ according to the grade of VUR. No significant correlation was found between CRP, PCT and IL-18. Conclusions: Proteinuria and microalbuminuria are valuable hallmarks of RN. CRP and PCT seem not to be reliable indicators of RN in VUR patients. Moreover, serum and urine IL-18 might not predict RN.     

内镜下注射聚糖酐/透明质酸共聚物治疗小儿膀胱输尿管返流

目的介绍巴黎ROBERTDEBRE医院的小儿外科应用在膀胱镜下输尿管下端开口处注射聚糖酐/透明质酸共聚物治疗(DEFLUX)治疗小儿膀胱输尿管返流的经验。方法选取从2001~2003年,ROBERTDEBRE医院(巴黎)小儿外科治疗的57个患儿,其中男11例,女46例。平均年龄71个月。患者有急性肾盂肾炎(APN)史,有药物治疗史,并有不同程度的膀胱输尿管返流。共80侧返流的输尿管,行膀胱镜下输尿管开口处注射DEFLUX。结果治疗的患儿术后1年随访。未发现明显的并发症。被治愈的输尿管共58侧(72.5%),1年内未有尿路感染的45例(78.9%)。Ⅰ度返流治愈率82.5%。Ⅱ度返流治愈率75.9%。Ⅲ度返流治愈率68.7%。Ⅳ度返流治愈率0。结论在膀胱镜下输尿管下端注射DEFLUX来治疗小儿膀胱输尿管返流,从而控制因膀胱输尿管返流引起的尿路感染是有效的,且安全和简单。     

A comparative study of endoscopic trigonoplasty for vesicoureteral reflux in children and in adults

BACKGROUND: Endoscopic trigonoplasty is an experimental therapy for vesicoureteral reflux. We investigated differences in surgical results between children and adults. METHODS: Endoscopic trigonoplasty was performed on 51 patients and 15 pediatric and 21 adult patients were included in this study. The children accounted for 27 cases of refluxing ureter (grade II, 8; III, 14; IV, 4; V, 1) and the adults for 28 cases (I, 4; II, 18; III, 4; IV, 2). There was a greater proportion of bilateral disease and a higher average degree of reflux in the children's group. RESULTS: We found no significant differences in operative time, complications, analgesics usage, the duration of the indwelling catheter and hospital stay. Our follow up at 3 months showed that the reflux had ceased in 19 of 27 cases (70%) in the children's group and in 27 of 28 cases (96%) in the adults' group. The next follow up at 12 months showed that there was no reflux in 16 of 27 cases (59%) in 15 children and in 17 of 23 adult cases (74%). Trigonal splitting caused recurrence of reflux greater than grade II, in two children (13%) affecting four ureters and in three adults (14%) affecting four ureters. CONCLUSIONS: Endoscopic trigonoplasty has proved to be equally less invasive in children and in adults, but vesicoureteral reflux was less often resolved in children. This suggests that the greater original distance between the ureteral orifices and the greater thickness of the detrusor muscle favor the adult patient. For children, a new surgical concept is needed to increase cessation rate of vesicoureteral reflux.     

Endoscopic management of vesicoureteral reflux in adult women

Study Type – Therapy (case series) Level of Evidence 4

OBJECTIVE

• ? To describe our endoscopic management of adult women with vesicoureteral reflux (VUR) and associated outcomes.

PATIENTS AND METHODS

• ? We retrospectively identified 19 adult women who presented for the endoscopic treatment of VUR from November 2001 to January 2008.
• ? Each patient was diagnosed with VUR by voiding cystourethrogram or nuclear cystourethrogram after an episode of pyelonephritis or recurrent urinary tract infections with renal scarring on ultrasound.
• ? A dimercaptosuccinic acid renal scan was performed prior to treatment. All patients underwent endoscopic treatment with dextranomer/hyaluronic acid copolymer (Deflux®). Patients with bilateral VUR received bilateral injections during the same procedure.
• ? Follow‐up imaging was obtained and success was strictly defined as no degree of VUR. Patients with residual VUR received repeat endoscopic treatment.

RESULTS

• ? Nineteen patients with a mean age of 22 years old (range 18–33 years old) underwent endoscopic treatment for VUR. A total of 79% (15/19) had pre‐existing risk factors for VUR, including prior open anti‐reflux surgery (26%), family history of VUR (26%) and childhood diagnosis of VUR (26%).
• ? Imaging revealed that 47% (9/19) had renal scarring and 26% (5/19) had bilateral VUR. The success rate was 79% (19/24) after one treatment, 92% (22/24) after 5 patients received a second treatment, and 96% (23/24) after 2 patients received a third treatment. There were no perioperative complications.

CONCLUSION

• ? Endoscopic management of VUR is both safe and effective in adult women.

     

Vesicoscopic cross-trigonal ureteral reimplantation: a minimally invasive option for repair of vesicoureteral reflux

PURPOSE: Cross-trigonal ureteral reimplantation is a commonly performed procedure for the correction of vesicoureteral reflux. Most previously described laparoscopic techniques have used an extravesical approach. A "vesicoscopic" technique is analogous to standard open cross-trigonal repair in principle, except that 3 ports with insufflation of the bladder are used to perform the ureteral reimplantation. MATERIALS AND METHODS: A retrospective review was performed of patients treated for primary vesicoureteral reflux with either vesicoscopic or open ureteral reimplantation. For patients with vesicoscopic reimplantation a 5 mm port is placed in the dome of the bladder and 2, 3 mm ports are placed laterally. The ureters are mobilized transvesically, cross-trigonal submucosal tunnels are made and the ureters are sutured in place with intracorporeal suturing. The bladder ports are closed and a urethral catheter is left indwelling for 36 hours. Among the open reimplantation group 38 patients underwent cross-trigonal ureteral reimplantation, 2 underwent extravesical ureteral reimplantation and 2 were excluded due to insufficient records. Followup imaging for both groups included ultrasonography at 1 month and voiding cystography at 3 months postoperatively. RESULTS: A total of 52 consecutive children underwent vesicoscopic ureteral reimplantation with 1 patient converted to open intravesical reimplantation, and 40 consecutive controls underwent open ureteral reimplantation. Postoperative vesicoureteral reflux resolution rates for the vesicoscopic and open groups were 91% (42 of 46 patients) and 97% (31 of 32 patients), respectively. Mean patient age and mean maximal grade of vesicoureteral reflux in the vesicoscopic and open groups were 5.7 and 4.0 years (p=0.001), and 2.8 and 3.2 (p=0.036), respectively. Mean operative times for vesicoscopic and open procedures were 199 and 92 minutes, respectively (p=0.001). While the average length of hospital stay of 2 days was similar between the groups (p=0.122), less oral and intravenous analgesia was needed postoperatively in the vesicoscopic group (p=0.001 and p=0.005, respectively). Complications of vesicoscopic ureteral reimplantation included urinary leakage in 1 child, bladder stones in 1 and bilateral ureteral obstruction in 1. There were no complications in the open group. CONCLUSIONS: There is an ever increasing trend toward minimally invasive surgery. Our preliminary results indicate that vesicoscopic ureteral reimplantation is an effective procedure with minimal morbidity. Although success rates for vesicoureteral reflux resolution were slightly lower in the vesicoscopic group in this study, the favorable results of other series and the improvement in postoperative discomfort observed here suggest that this technique may be a reasonable option in the management of vesicoureteral reflux. Further refinement of the technique and critical analysis of the long-term outcomes are needed to understand fully its place in the treatment of vesicoureteral reflux.     

Clinical course of vesicoureteral reflux in patients with hypospadias

Objectives: The prevalence of vesicoureteral reflux (VUR) in hypospadic patients is reportedly higher than in healthy children. We investigated the prevalence and the clinical course of VUR in hypospadic patients. Methods: We carried out intraoperative cystography to detect VUR in 338 patients who underwent hypospadias repair. Age, severity of hypospadias and the presence of VUR were investigated. A dimercaptosuccinic acid renal scan and follow‐up voiding cystourethrography (VCUG) were carried out if VUR was detected. Results: VUR was detected in 41 patients (12.1%). Of 156 patients who were younger than 1 year‐of‐age, 34 (21.8%) were found to have VUR. The prevalence of VUR was significantly higher in patients younger than 1 year (P < 0.001), but was not associated with hypospadias type (P = 0.212). The reflux grades were I, II and III in 6, 52 and 1 renal units, respectively. Renal scarring was shown in one of 36 patients. Follow‐up VCUG was carried out in 30 patients at a mean of 14.28 ± 3.89 months, and reflux resolved in 27 and improved from grade II to grade I in three patients. Conclusions: Although its prevalence is higher in hypospadic children than in healthy children, it is not necessary to screen for VUR in hypospadic patients, because it is likely to be low‐grade and to resolve in most cases.