Minimally invasive repair of hypospadiac urethral duplication

Urethral multiplicity in boys: systematic review of case reports and case series from the last 15 years

Introduction

Urethral multiplicity is a rare congenital anomaly characterized by the presence of two or more urethral channels. It is more common in males and can cause double urinary stream, incontinence, obstruction, and recurrent urinary infections. Diagnosis is difficult due to diverse clinical manifestations. Implementing an evidence-based treatment plan is challenging due to the need for more concise and informative summary publications. Our paper provides a comprehensive review of the management of this pathology and might serve as a valuable resource for pediatric urologists and specialists in the field.

Methods

A comprehensive search in four electronic databases, PubMed®, PubMed Central® (PMC), Scopus, and Clarivate Analytics's Web of Science (WoS), was conducted to identify case reports and series published between 2008 and 2023 on urethral multiplicities. The quality of the articles was assessed using qualified instruments. Covidence® tool-guided synthesis was followed by individual patient data extraction. Further classifications and analysis were made using Microsoft Excel®.

Results

Out of the 90 papers included in the review, 62 were case presentations, and 28 were case series. We found 250 boys with urethral multiplicity. Based on Effman's classification, there were 38 cases of type I (15.3%), 21 type IIA1 (8.4%), 55 type IIA2 (22.1%), 91 type IIA2Y (36.5%), 4 type IIB (1.6%), and 6 type III (2.4%) urethral duplications. There were 19 cases of prepubic sinuses (7.6%), 9 triplications (3.6%), and 6 unknown forms (2.4%). We have provided data for each type, including clinical presentation, investigations, surgical management, and outcomes.

Conclusions

Urethral multiplicities are a rare and varied group of malformations that require high-quality imaging examination for successful management. Treatment is specific to each patient and may depend on the surgeon's preference or skill.

Systematic Review Registration

https://www.crd.york.ac.uk/prospero/display_record.php?ID = CRD42023471685, identifier (CRD42023471685).

Practical and functional classification of the double urethra: A variable, complex and fascinating malformation observed in 20 patients

INTRODUCTION

Urethral duplication is a rare and variable malformation of the urinary tract, with non-univocal and complex management. In addition, different classification schemes have been proposed, but none have considered all the possible variants.

OBJECTIVE

To report experience with the management of 20 urethral duplication patients and propose a classification of this anomaly.

MATERIALS AND METHODS

A retrospective analysis collecting information regarding 20 patients (Table) with urethral duplication treated at a single institution over the past 40 years. Three females and 17 males were treated: two had vesico-urethral duplication, eight had urethral duplication with a single bladder, and eight had 'λ' duplication.

RESULTS

Immediate postoperative complications included urethral dehiescence (n = 1) and urethral stenosis (n = 2). The progressive augmentation by dilating the urethra (PADUA) technique was ineffective. During follow-up, the following were recorded: urinary incontinence (n = 2), urinary tract infection (n = 3), hypertension (n = 3) and erectile dysfunction (n = 1). All patients were satisfied with the aesthetic result.

DISCUSSION

Urethral duplication is a rare anomaly with male preponderance. Four types of duplication were described, on the basis of anatomy and management: vesical and urethral duplication (type 1), urethral duplication with single bladder (type 2), 'λ-type' duplication (type 3) and 'miscellanea' (multiple urethral channels, spindle urethra, other female forms, type 4). A full description of the malformation and surgical approach was given for each type. The advantages of the classification were compared with the literature.

CONCLUSIONS

The proposed classification should be a useful tool, based on the required surgical approach, even if surgery should be tailored to the patient. It is important to restore the anatomy and achieve urinary continence. Surgery can be challenging and a multi-step process, especially in cases of 'λ' duplications.