Urinary Tract Anomalies Associated with Unicornuate Uterus

PURPOSE: We investigated the association between the various subclasses of the unicornuate uterus and urinary tract anomalies. MATERIALS AND METHODS: We studied the urinary tract of 37 patients with a unicornuate uterus by urography and/or ultrasonography. Unicornuate uterus was diagnosed at laparoscopy or laparotomy. RESULTS: A total of 15 patients (40.5%) had urinary tract anomalies, including ectopic kidney in 4, renal agenesis in 6, double renal pelvis in 2, horseshoe kidneys in 2 and unilateral medullary sponge kidney in 1. No differences were observed in the frequency of urinary anomalies among the various subclasses of unicornuate uterus. CONCLUSIONS: Our results indicate the need to suspect a urinary tract anomaly, particularly of the kidney, in all women with a unicornuate uterus.