Natural history of obstructed and pseudo-obstructed megaureters detected by prenatal ultrasonography.
In a series of 38 patients with non-refluxing megaureters detected by prenatal ultrasonography, 89% were males and 16% had associated ipsilateral or contralateral urinary anomalies. By renographic criteria, 36% of ureters were not obstructed; renal function was never impaired initially and, on follow-up, spontaneous resolution of dilatation was common. Infective urinary calculi developed in 3 of the boys. In ureters obstructed by renographic or pressure-perfusion criteria, 79% exhibited normal renal function initially. Most such patients were managed expectantly; on follow-up, functional deterioration occurred in 2 patients, while in the remainder dilatation usually persists but without change in function.
Rickwood
A M
AM
Regional Department of Paediatric Urology, Royal Liverpool Childrens Hospital, Alder Hey.
Jee
L D
LD
Williams
M P
MP
Anderson
P A
PA
D002675:Child, Preschool; D005260:Female; D005315:Fetal Diseases / Q000000981:diagnostic imaging*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D011866:Radioisotope Renography; D016216:Ultrasonography, Prenatal; D014517:Ureteral Obstruction / Q000000981:diagnostic imaging*; D014551:Urinary Tract / Q000002:abnormalities* / Q000000981:diagnostic imaging