title: The ureteric ring.
abstract: A ureteric ring is a smooth, concentric ring-like narrowing occurring in the upper third of the ureter. It is nonobstructive and may be transient and bilateral. There is a slight female preponderance. They are seen in all age groups and are common in the neonate together with transient changes. A ureteric ring has a characteristic appearance and is believed to result from contraction of circular muscle.
authors.affiliation: Radiology Service, Jerry L. Pettis Memorial VAMC, Loma Linda, CA 92357, USA and Department of Radiology, Loma Linda University Medical Center, Loma Linda, CA 92357, USA.
authors.forename: P
authors.initials: P
authors.lastname: Dure-Smith
authors.forename: T E
authors.initials: TE
authors.lastname: Wiley
authors.forename: R D
authors.initials: RD
authors.lastname: Suh
authors.forename: A K
authors.initials: AK
authors.lastname: Song
mesh_terms: D000328:Adult; D000368:Aged; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009119:Muscle Contraction; D012189:Retrospective Studies; D014513:Ureter / Q000002:abnormalities* / Q000000981:diagnostic imaging; D014567:Urography