Can we improve the usefulness of the diuretic renogram in the diagnosis of ureteropelvic junction obstruction (UPJO) in children? Introduction of mercaptoacetyltriglycine-suspected obstruction scoring system (MAG-SOS).

Introduction: Mercaptoacetyltriglycine (MAG-3) renogram is one of the gold standard diagnostic tools of ureteropelvic junction obstruction (UPJO); however, there is no widely agreed indications of pyeloplasty based on MAG-3 findings. In this study, we introduce a renogram scoring system that can help improve the prognostic value of MAG-3 renogram and in the decision making of pyeloplasty.

Patients And Methods: We retrospectively reviewed consecutive pyeloplasties for antenatal hydronephrosis from 2010 to 2020.

Case report: Diffuse hyperplastic perilobar nephroblastomatosis complicated by a unilateral Wilms tumour: diagnosis, treatment and follow-up.

Background: Nephroblastomatosis is an uncommon pathologic process characterized by the presence of persistent embryonic nephrogenic rests. Progression to Wilms tumour occurs in an estimated 35% of patients. Cure rates are based on histologic findings and disease stage and have improved from 10% in the 1920s to over 90% today.

Pediatric metanephric adenoma: case report and review of the literature.

Metanephric adenomas are rare benign renal neoplasms, uncommonly seen in the pediatric population. They are typically detected incidentally on imaging studies performed for unrelated clinical presentations. Preoperatively, the imaging appearance of this tumor overlaps with the appearance of more common and more aggressive renal neoplasms such as Wilms' tumor or renal cell carcinoma.

Simplified mons plasty: a new technique to improve cosmesis in females with the exstrophy-epispadias complex.

Purpose: Long-term data suggest that a significant number of women with the exstrophy-epispadias complex (EEC) report dissatisfaction with the cosmetic appearance of the genitalia. We developed a new technique of mons plasty in an attempt to improve the overall cosmetic appearance of the external genitalia in females with EEC.

Materials And Methods: Nine consecutive females with a mean age of 6.

Percutaneous antegrade endopyelotomy: long-term results from one institution.

Objectives: To assess the long-term efficacy of percutaneous antegrade endopyelotomy for the treatment of ureteropelvic junction (UPJ) obstruction performed at a single institution during a 10-year period. We provide alterations in investigation and management strategies on the basis of the results.

Methods: From July 1990 to June 2001, 80 patients with clinical and radiographic evidence of UPJ obstruction underwent percutaneous endopyelotomy for the treatment of primary (n = 61) or secondary (n = 19) UPJ obstruction.

Oxalate-degrading enzymes from Oxalobacter formigenes: a novel device coating to reduce urinary tract biomaterial-related encrustation.

Background And Purpose: The long-term placement of biomaterials within the urinary tract is limited by the development of encrustation. In a noninfected urinary environment, encrustation often results from the deposition of calcium oxalate on the biomaterial surface. There is an association between the absence of Oxalobacter formigenes, a commensal colonic bacterium capable of degrading oxalate, and calcium oxalate stone formation.

Group A streptococcal hydrocele infection and sepsis in a renal transplant recipient.

A case of hydrocele infection secondary to a cutaneous b-hemolytic group A streptococcal infection is described in a renal transplant recipient. Sepsis and renal failure occurred in the setting of this severe, life-threatening infection. This case represents the first description of a group A streptococcal hydrocele infection in an adult.

Safety and efficacy of holmium: YAG laser lithotripsy in patients with bleeding diatheses.

Purpose: We assessed the safety and efficacy of ureteroscopy and holmium:YAG laser lithotripsy for treating upper urinary tract calculi in patients with known and uncorrected bleeding diathesis.

Materials And Methods: We retrospectively reviewed the charts at 2 tertiary stone centers to identify patients with known bleeding diathesis who were treated with holmium:YAG laser lithotripsy for upper urinary tract calculi. A total of 25 patients (29 upper urinary tract calculi) underwent ureteroscopic holmium laser lithotripsy.