Neonatal renal pelvic ectasia. Incidence, evolution and association to vesicaureteral anomalies. Cynecobsteric Hospital "Julio R. Alfonso Medina". Matanzas. 1994-2004

Abstract

The use of the prenatal ecography allows early detecting urinary malformations, but it also shows minor disturbances, sometimes transitory; that is why we wanted to evaluate the incidence, evolution and association to vesicaureteral anomalies to renal pelvic ectasia in our settings. We made a retrospective analysis of the neonatal and mother's records of the diagnosed renal pelvic ectasia cases, born in our hospital during the decade 1994-2004 collecting the following data: obstetric ultrasounds, gestational age, measure in millimeters of the renal pelvis, anteposterior diameter, sex, postnatal studies and definitive diagnosis. Results: we reviewed 255 cases, 55 of them diagnosed during the second semester of pregnancy, and 200 during the third semester; 205 of them were male and 50 female; at birth, 50 were normal, 153 had bilateral dilatation, 40 left dilatation and 12 had right dilatation. According to postnatal ultrasounds, 151 were Grade I, 36 Grade II, 15 Grade III and 3 Grade IV. We made a urine cystourethrography in 203 of them, and found 50 anomalies. Conclusions: The incidence of children diagnosed with renal pelvic ectasia in the studied period was lower than that referred around the world; there was a predominance of the male sex; the diagnosis was made during the third semester; the most common was the bilateral anomaly and those unilateral predominated in the left side, mainly Grade I and II, without complications; and the uretrocystographies were normal. Natural development shows a regression, in most of the cases.