title: Congenital ureteral valves--an abnormality of ureteral embryogenesis?
abstract: Congenital ureteral valves are a rare cause of obstructive uropathy and the majority of cases are diagnosed only at surgery or autopsy. A case of congenital ureteral valve associated with an incompletely duplicated kidney is reported and the literature on ureteral valves is reviewed. Modern uroradiological and endoscopic diagnostic techniques should result in a more precise preoperative diagnosis. The high incidence of associated genitourinary anomalies, particularly duplication anomalies, suggests abnormal ureteral embryogenesis as an etiological factor in congenital ureteral valve formation.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000150:complications; D007223:Infant; D007231:Infant, Newborn; D007668:Kidney / Q000002:abnormalities; D007682:Kidney Pelvis / Q000002:abnormalities; D008297:Male; D008875:Middle Aged; D009392:Nephrectomy; D014463:Ultrasonography; D014513:Ureter / Q000002:abnormalities* / Q000196:embryology; D014517:Ureteral Obstruction / Q000209:etiology; D014549:Urinary Incontinence / Q000150:complications; D014552:Urinary Tract Infections / Q000150:complications; D014567:Urography