title: Xanthogranulomatous pyelonephritis presenting as a psoas abscess in a child.
authors.forename: R
authors.initials: R
authors.lastname: Grainger
mesh_terms: D002648:Child; D006801:Humans; D016659:Psoas Abscess / Q000209:etiology*; D011705:Pyelonephritis, Xanthogranulomatous / Q000150:complications*