OBJECTIVE Antenatal hydronephrosis is diagnosed in 1% to 5% of all pregnancies; however, the antenatal and postnatal management of hydronephrosis varies widely. No previous studies define the risk of postnatal pathology in infants with antenatal hydronephrosis. Our objective was to review the current literature to determine whether the degree of antenatal hydronephrosis and related antenatal ul...

BACKGROUND Infants with neonatal hydronephrosis and a normal voiding cystourethrogram (VCUG) are presumed to have ureteropelvic junction obstruction (UPJO). There is little current information about the natural history of children with hydronephrosis or clinical factors that predict resolution of the radiological abnormality. OBJECTIVE To determine the time course until spontaneous resolution...

background : hydronephrosis (hn) or calycial dilatation is the most common prenatal urologic abnormality. the aim of this study was to identify the possible changes in demographic and clinical manifestations of infantile hn in previously and recently diagnosed patients.   methods : 193 children with infantile hn admitted to ali-asghar children's hospital in two different periods (group 1 1997-2...

The present study evaluated the prognostic value of three-dimensional ultrasound for fetal hydronephrosis. Pregnant females with fetal hydronephrosis were enrolled and a novel three-dimensional ultrasound indicator, renal parenchymal volume/kidney volume, was introduced to predict the postnatal prognosis of fetal hydronephrosis in comparison with commonly used ultrasound indicators. All ultraso...

BACKGROUND Urinary tract obstruction and postoperative hydronephrosis are risk factor for renal function deterioration after orthotopic ileal neobladder construction. However, reports of relationship between transient hydronephrosis and renal function are limited. We assess the influence of postoperative transient hydronephrosis on renal function in patients with orthotopic ileal neobladder con...

Hydronephrosis means dilation of the pelvis of the kidney by urine which has accumulated, because of obstruction of the urinary tract at some point distal to the pelvis, most commonly the pelvi-ureteral junction. If the obstruction be at a lower level, the ureter becomes dilated first, and the kidney is involved later. Occasionally the obstruction is confined to one or more of the minor calyces...

Background: The present study was conducted to compare the efficiency of hydronephrosis index (HI) with those of pelvic anteroposterior (AP) diameter and parenchymal thickness in the diagnosis of fetal hydronephrosis in the prenatal period, as well as 1, 6, and 12 months after birth. Methods: This study was conducted on pregnant women with the pregnancy age of > 30 weeks whose fetus was suspect...

An interesting case of nonobstructive lower pole hydronephrosis associated with reflux and simulating a neoplasm is presented and discussed. Advanced hydronephrosis localized to one portion of a duplicated kidney in adults may simulate a renal neoplasm on intravenous pyelogram. Upper pole hydronephrosis is a well-described clinical entity and is prominent in the differential diagnosis of renal ...

  Abstract   Background: Hydronephrosis is the most common congenital condition that is detected   by prenatal ultrasonography. Moreover, the widespread use of prenatal ultrasonography   results in an increased recognition of fetal hydronephrosis. Prenatal hydronephrosis   is diagnosed at an incidence of 1:100 to 1:500 by ultrasonographic studies. The presence of hydronephrosis is not synonymou...