title: Stenosing hemorrhagic ureteritis in a child with Henoch-Schönlein purpura: CT appearance.
abstract: Henoch-Schönlein purpura is rarely considered in the differential diagnosis of ureteral obstruction in children. Renal ultrasound and intravenous urography may reveal hydroureteronephrosis but usually fail to yield a specific diagnosis. In this child CT differentiated between an intrinsic ureteral stenosis (hemorrhagic ureteritis) and an extrinsic ureteral stenosis (retroperitoneal fibrosis), two rare complications of Henoch-Schönlein purpura. The CT findings of hemorrhagic ureteritis are described.
authors.affiliation: Department of Radiology, University Hospitals K.U. Leuven, Belgium.
authors.forename: M H
authors.initials: MH
authors.lastname: Smet
authors.forename: G
authors.initials: G
authors.lastname: Marchal
authors.forename: R
authors.initials: R
authors.lastname: Oyen
authors.forename: L
authors.initials: L
authors.lastname: Breysem
mesh_terms: D002648:Child; D005260:Female; D006801:Humans; D011695:IgA Vasculitis / Q000150:complications*; D014057:Tomography, X-Ray Computed; D014515:Ureteral Diseases / Q000000981:diagnostic imaging* / Q000209:etiology