Management of bladder dysfunction was revolutionized by the introduction of intermittent catheterization by Lapides. Later, Mitrofanoff described a trans-appendicular continent cystostomy, launching a new concept whereby the bladder could be emptied by a route other than the urethra.

Clean intermittent catheterization (CIC) is one of the main tools for neurogenic lower urinary tract dysfunction management, as it provides adequate bladder emptying and protects the upper urinary tract from high pressures, hence preventing progressive renal damage.

Despite its important role, CIC is difficult to perform in various situations: lack of manual dexterity, female wheelchair patients, body habitus, anatomical morbidity due to extensive surgery or psychological problems. For such patients, continent urinary diversion (CUD) is a viable option for bladder emptying optimization.

Various techniques have been described to create an anti-reflux appendicovesical anastomosis in pediatric lower urinary tract reconstruction, whether performed via an extravesical or an intravesical route, all share a common denominator of creating a submucosal tunnel in an attempt to replicate the physiological anti-reflux mechanism.

Inclusion Criteria:

• children with neurogenic bladder dysfunction, as an alternative route for catheterization for those who are unable or unwilling to utilize the native route being sensate urethra.
• in cases where bladder neck closure or reconstruction is necessary to achieve continence.
• Patients with urethral valves, prune belly syndrome and bladder exstrophy, performed either as an isolated procedure enabling patients to perform clean intermittent catheterization (CIC) or in relation with concomitant bladder augmentation

Exclusion Criteria:

patients clinically unfit for surgery patients underwent previous traditional Mitroffanof procedure

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