Abnormal ureteral orifices
Agenesis of a ureteral orifice may accompany renal agenesis on the same side. More often, however, when there is congenital absence of a kidney the upper end of the ureter is a blind pouch. When there is absence of a ureteral orifice in the bladder, the normal markings of the trigone on that side are usually absent as well: there is no ureteral ridge, and half or more of the interureteric ridge is absent.
KeywordsBladder Neck Renal Agenesis Ureteral Orifice Prostatic Urethra Urinary Tract Obstruction
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