Heminefrectomía laparoscópica en ectopia renal cruzada con fusion inferior de unidades renales

objectives: crossed fused renal ectopia is a rare congenital anomaly. we report the case of a 3 year old boy with diagnosis of right crossed fused renal ectopia, history of recurrent urinary tract infection and previous failure of surgical treatment. methods: three year old boy with diagnosis of right crossed fused renal ectopia of the inferior moiety underwent a laparoscopic heminephrectomy of the inferior renal unit, due to severe hidronefrosis and recurrent urinary tract infections. results: a laparoscopic right heminephrectomy of the inferior renal moiety was performed uneventfully. operation room time was 200 minutes and there were no perioperative complications. patient was discharged 18 hours after the procedure. after 5 years of follow up patient remains asymptomatic with good renal function. conclusions: the laparoscopic approach is an acceptable option to treat this anomaly, with all the advantages of minimally invasive surgery.