Paediatric urology
Common congenital and childhood procedures, linked to shared all-ages hubs where appropriate.
Bladder exstrophy and epispadias reconstruction
Bladder or abdominal-wall dehiscence
Tension, pelvic geometry, infection or poor tissue perfusion can disrupt primary closure.
Applies to: All variantsUrinary fistula or urethral breakdown
Complex multi-layer urinary reconstruction can develop persistent leakage.
Applies to: All variantsUreteric obstruction, reflux or upper-tract damage
Abnormal trigonal anatomy, outlet resistance and repeated reconstruction affect renal drainage.
Applies to: All variantsPersistent incontinence or unsafe bladder pressure
Anatomical closure does not guarantee adequate capacity, compliance or outlet function.
Applies to: All variantsPenile or clitoral injury, curvature or sexual dysfunction
Genital reconstruction and congenital anatomy can affect sensation, dimensions and sexual function.
Applies to: All variantsPelvic, limb or osteotomy morbidity
Pelvic osteotomy and immobilisation add orthopaedic, neurovascular and wound risks.
Applies to: Staged exstrophy repair · Complete primary repairStone, infection and later malignancy
Chronic exposed/reconstructed urothelium, stasis and infection require lifelong surveillance.
Applies to: All variantsNeed for repeated staged and revision surgery
Multiple operations are commonly part of the care pathway rather than a single technical endpoint.
Applies to: All variantsPaediatric hypospadias and chordee reconstruction
Urethrocutaneous fistula
Breakdown of the neourethral closure can create an additional urinary opening.
Applies to: All variantsMeatal or urethral stenosis
Scarring at the meatus, glans or reconstructed segment can obstruct flow.
Applies to: All variantsGlans or wound dehiscence
Tension, infection or poor vascularity can separate the glans or skin closure.
Applies to: All variantsResidual or recurrent curvature
Curvature may be undercorrected or recur with healing and pubertal growth.
Applies to: All variantsUrethral diverticulum, hair or stone formation
Substitution tissue and a wide or poorly supported segment can cause stasis and later complications.
Applies to: Onlay flap or tubularised flap repair · Two-stage graft repair · Redo hypospadias reconstructionSkin, glans or flap ischaemia
Compromised penile or flap blood supply can cause partial tissue loss.
Applies to: All variantsAltered sensation, sexual function or cosmetic dissatisfaction
Long-term outcomes extend beyond childhood urinary-stream appearance.
Applies to: All variantsNeed for staged completion or revision
Complex repairs may require planned stages and additional unplanned corrections.
Applies to: Two-stage graft repair · Redo hypospadias reconstructionPaediatric nephrectomy and heminephrectomy for benign disease
Bleeding or vascular injury
Small-calibre and variant vessels can retract or compromise preserved renal tissue.
Applies to: All variantsLoss of function in retained moiety or opposite kidney
Vascular or collecting-system injury can damage the tissue the operation intends to preserve.
Applies to: Upper-pole heminephrectomy · Lower-pole heminephrectomyUrinary leak or urinoma
A divided collecting system or ureteric stump can leak.
Applies to: All variantsResidual ureteric stump infection or symptoms
A retained refluxing or ectopic ureteric segment can remain symptomatic.
Applies to: All variantsAdjacent-organ or port injury
Upper abdominal and minimally invasive access can injure bowel, solid organs or pleura.
Applies to: All variantsHypertension or chronic kidney-function impact
Reduced nephron mass and the original renal disease require long-term surveillance.
Applies to: All variantsPaediatric neuro-urological bladder reconstruction
Bowel leak, obstruction or intra-abdominal sepsis
Bowel isolation and anastomosis add immediate and late gastrointestinal risks.
Applies to: Augmentation cystoplasty · Composite reconstruction · Incontinent diversionUrinary leak or fistula
Multiple urinary anastomoses and high pressure can cause leakage.
Applies to: All variantsChannel stenosis, false passage or incontinence
Catheter access can become narrow, traumatised or leaky and may need revision.
Applies to: Continent catheterisable channel · Composite reconstructionRetention or upper-tract deterioration from outlet imbalance
Increasing resistance without reliable low-pressure catheter drainage can threaten kidneys.
Applies to: Bladder-neck reconstruction, sling or outlet closure · Composite reconstructionStones, infection and mucus obstruction
Reconstructed reservoirs and catheterisation promote mucus, bacteriuria and calculi.
Applies to: All variantsMetabolic, nutritional or growth consequences
Urine–bowel contact and bowel resection can affect acid-base status, vitamins, bone and growth.
Applies to: Augmentation cystoplasty · Composite reconstruction · Incontinent diversionReservoir perforation
A reconstructed bladder can rupture years later and requires lifelong recognition education.
Applies to: Augmentation cystoplasty · Composite reconstructionNeed for repeated revision through growth
Stomas, channels, outlets and reservoirs can require further procedures as the child grows.
Applies to: All variantsPaediatric primary obstructed megaureter surgery
Recurrent obstruction or anastomotic stricture
Ischaemia, kinking, tight tapering or tunnel compression can impair drainage.
Applies to: All variantsNew or persistent reflux
The reconstructed antireflux mechanism may be insufficient or deliberately limited in a small bladder.
Applies to: All variantsUrinary leak or urinoma
A ureteric or bladder closure can leak before healing.
Applies to: All variantsUreteric devascularisation
Extensive mobilisation and tailoring can compromise segmental blood supply.
Applies to: Excision and ureteric reimplantation · Tapering or folding with reimplantationStomal stenosis, prolapse or skin breakdown
An external diversion can become difficult to drain or care for.
Applies to: Temporary cutaneous ureterostomyStent migration, blockage or retained device
A temporary stent needs reliable surveillance and removal.
Applies to: Temporary internal stentingUrinary infection
Residual stasis and drainage devices can promote infection.
Applies to: All variantsPaediatric pyeloplasty for pelvi-ureteric junction obstruction
Urinary leak or urinoma
Anastomotic or drainage failure can cause retroperitoneal or intraperitoneal leakage.
Applies to: All variantsRecurrent or persistent PUJ obstruction
Scarring, kinking, missed anatomy or ischaemia can limit drainage.
Applies to: All variantsBleeding or crossing-vessel injury
Aberrant or segmental vessels can be injured during mobilisation and tailoring.
Applies to: All variantsUrinary infection
Stasis, devices and urine leakage can lead to infection.
Applies to: All variantsStent or drain migration, blockage or retained device
Internal and external drainage require explicit removal or exchange tracking.
Applies to: All variantsBowel, solid-organ or port complication
Minimally invasive abdominal access adds approach-specific risks.
Applies to: Laparoscopic dismembered pyeloplasty · Robotic dismembered pyeloplastyPaediatric ureterocele and duplex-system surgery
New or persistent vesicoureteric reflux
Decompression changes the distal antireflux mechanism and may expose reflux into one or more moieties.
Applies to: Endoscopic ureterocele puncture or incisionPersistent or recurrent obstruction
An inadequate opening, anastomotic scarring or complex distal anatomy can limit drainage.
Applies to: All variantsUrinary leak or urinoma
Ureteric and renal reconstruction can leak into the retroperitoneum or pelvis.
Applies to: All variantsLoss of function in the remaining moiety
Shared vessels or inadvertent collecting-system injury can damage the preserved lower pole.
Applies to: Upper-pole heminephrectomy and ureterectomyUreteric devascularisation or injury
Duplex ureters can share a delicate adventitial blood supply.
Applies to: All variantsUrinary infection
Residual stasis, reflux and devices contribute to ongoing infection risk.
Applies to: All variantsBladder-neck or contralateral ureteric injury
Complex trigonal surgery can affect continence and the opposite upper tract.
Applies to: Common-sheath ureteric reimplantation · Ureterocelectomy and bladder reconstructionPaediatric urinary stone procedures
Ureteric perforation, avulsion or later stricture
Small-calibre and anomalous ureters are vulnerable to access and instrument trauma.
Applies to: Ureteroscopy or RIRSBleeding or renal vascular injury
Percutaneous tracts and renal surgery can cause haemorrhage or parenchymal loss.
Applies to: Paediatric PCNL · Laparoscopic or open stone removalInfection or sepsis
Infected urine, high intrarenal pressure and residual obstruction can cause systemic infection.
Applies to: All variantsPleural, bowel or solid-organ injury
Small body size and congenital anatomy narrow safe access windows.
Applies to: Paediatric PCNL · Laparoscopic or open stone removalResidual fragments or recurrent stones
Stone clearance and metabolic prevention must be tracked separately.
Applies to: All variantsStent, nephrostomy or fragment obstruction
Temporary devices and fragmented stone can obstruct or migrate.
Applies to: All variantsRenal growth or functional impact
Repeat procedures, obstruction, infection and parenchymal injury can affect a developing kidney.
Applies to: All variantsPaediatric urogenital sinus and cloacal reconstruction
Urethral, bladder, ureteric or rectal injury
Closely shared and developmentally variant planes make adjacent-organ injury a defining risk.
Applies to: All variantsUrinary, vaginal or rectal fistula
Breakdown between reconstructed systems can produce complex persistent leakage or infection.
Applies to: All variantsStenosis of urinary, vaginal or anorectal outlet
Scar and growth can narrow any reconstructed channel.
Applies to: All variantsUrinary or faecal incontinence
Congenital sphincter anatomy and reconstruction both influence continence.
Applies to: All variantsUrinary infection, hydrocolpos or upper-tract deterioration
Persistent obstruction or incomplete drainage can threaten renal function.
Applies to: All variantsGraft, flap or bowel-segment complication
Substitution tissue adds donor-site, mucus, stenosis and metabolic considerations.
Applies to: Vaginal pull-through or substitution · Combined cloacal reconstructionSexual, reproductive or psychological harm
Long-term evaluation must include autonomy, body image, menstruation, fertility and sexual function.
Applies to: All variantsPosterior urethral valve ablation and urinary diversion
Urethral injury or stricture
Instrumentation and thermal or mechanical injury can scar the narrow infant urethra.
Applies to: Endoscopic valve ablationResidual valve tissue or persistent obstruction
Incomplete division can leave an obstructive membrane requiring reassessment.
Applies to: Endoscopic valve ablationUrinary infection
Obstruction, instrumentation and external drainage all increase infection risk.
Applies to: All variantsVesicostomy stenosis, prolapse or skin injury
The stoma can narrow, prolapse, leak onto skin or become difficult to manage.
Applies to: Cutaneous vesicostomy · Vesicostomy closure and later outlet reassessmentUreterostomy obstruction or loss of ureteric length
An upper-tract stoma can compromise drainage and make later reconstruction more complex.
Applies to: Upper-tract diversionPersistent bladder dysfunction, incontinence or renal decline
Valve ablation relieves anatomy but does not reverse established bladder and kidney injury.
Applies to: All variantsProcedural treatment of paediatric vesicoureteric reflux
Ureteric obstruction
Excess injection, tunnel tightness, oedema, kinking or ischaemia can obstruct drainage.
Applies to: All variantsPersistent or recurrent reflux
The antireflux mechanism may be incomplete or change with growth and bladder function.
Applies to: All variantsUrinary infection
Infection can occur despite technically successful correction and may signal residual bladder-bowel dysfunction.
Applies to: All variantsVoiding dysfunction or retention
Bilateral peri-ureteric dissection can temporarily or persistently impair bladder emptying.
Applies to: Open extravesical reimplantation · Robotic extravesical reimplantationBladder leak, haematuria or spasm
Cystotomy and intravesical dissection add bladder-healing morbidity.
Applies to: Open intravesical reimplantationBulking-agent migration or local reaction
Injected material can move, calcify or form a mound that complicates later imaging or surgery.
Applies to: Endoscopic subureteric injectionBowel or port-site injury
Abdominal minimally invasive access adds visceral and port risks.
Applies to: Robotic extravesical reimplantationSurgery for undescended and impalpable testis
Testicular atrophy or loss
Vascular compromise can follow dissection, tension, twisting or reliance on inadequate collaterals.
Applies to: All variantsVas deferens or epididymal injury
Congenital elongation or separation can make reproductive structures particularly vulnerable.
Applies to: All variantsHigh position, re-ascent or recurrent torsion
Inadequate length or fixation can compromise durable scrotal placement.
Applies to: All variantsBleeding, infection or hernia
Access wounds and an incompletely treated processus vaginalis can cause routine or approach-specific morbidity.
Applies to: All variantsIntra-abdominal organ or port injury
Abdominal access adds bowel, bladder and vascular risks.
Applies to: Laparoscopic orchidopexy · One- or two-stage Fowler–Stephens pathwayNeed for a second planned or unplanned operation
A staged technique requires completion, and failed position or viability can require revision.
Applies to: One- or two-stage Fowler–Stephens pathway