Surgery Insight: advantages and pitfalls of surgical techniques for the correction of bladder exstrophy

Abstract

Staged reconstruction repair of bladder exstrophy results in hydronephrosis or renal scarring in 15-25% of patients. A cosmetically acceptable and functional phallus can be achieved in 85% of patients, 20-30% of whom will require more than one operation for penile reconstruction. Episodes of penile glans loss or corporal loss are rarely reported with this technique. Widely disparate results relating to complete urinary continence and volitional voiding have been published, with urinary continence reported to occur in 7-85% of patients. The need for bladder augmentation to obtain urinary continence also varies, with reports that somewhere between 10% and 90% of patients require an augmentation procedure to gain urinary continence. Complete primary repair of bladder exstrophy using the penile disassembly technique results in hydronephrosis or renal scarring in 0-30% of patients, and hypospadias, as a consequence of this repair, will occur in 30-70% of patients. Loss of the glans and corpora appear more frequently with penile disassembly than in staged reconstruction of bladder exstrophy, however, the exact incidence of this complication is unknown. Reported complete urinary continence and volitional voiding rates are also varied following penile disassembly, ranging from 25-65%. A modified bladder-neck reconstruction to gain urinary continence is reportedly required in 15-90% of patients, with 5-10% requiring both bladder augmentation and bladder-neck reconstruction. Experience with complete primary repair of bladder exstrophy, using the penile disassembly approach, seems promising but is not a panacea. To outline the risks and benefits regarding the various surgical techniques for bladder exstrophy, we would recommend the establishment of a national registry for patients with this disorder.