title: [Pyelonephritic scar formation].
abstract: Pyelonephritic scars almost never develop after urinary tract infections alone, but require certain risk factors in addition. The most important risk factors are: vesicoureteral reflux, intrarenal reflux, obstructive uropathy, and nephrolithiasis. Most pyelonephritic scars develop in early childhood with the combination of vesico-ureteral reflux, intrarenal reflux, and urinary tract infections. Urinary tract infections alone almost never result in pyelonephritic scars. After the age of 3 years the risk developing pyelonephritic scars is not more than 10% in those with the combination of urinary tract infections and vesicoureteral reflux. In this age group the risk developing pyelonephritic scars is not altered by antireflux operation.
authors.affiliation: Urologische Universitätsklinik Hamburg.
authors.forename: H
authors.initials: H
authors.lastname: Huland
mesh_terms: D000328:Adult; D002648:Child; D002921:Cicatrix / Q000503:physiopathology*; D005260:Female; D006801:Humans; D007668:Kidney / Q000503:physiopathology; D011247:Pregnancy; D011704:Pyelonephritis / Q000503:physiopathology*; D012307:Risk Factors; D014517:Ureteral Obstruction / Q000503:physiopathology; D014552:Urinary Tract Infections / Q000503:physiopathology*; D014718:Vesico-Ureteral Reflux / Q000503:physiopathology