A ureterocele is a congenital cystic ballooning of the terminal submucosal ureter. Simple orthotopic ureterocele represents about 30% of all ureteroceles and occurs primarily in adult males. Ectopic ureterocele represents about 70% of all ureteroceles, occuring mainly in female children with a left predominance. Ten per cent are bilateral. From 1970 to 1991 we observed 15 patients (11 females, 4 males) with ureteroceles. We preferred the surgical approach for treating ureteroceles in all patients. Only 1 patient treated in this manner had a subsequent reflux.
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