title: [2 patients with idiopathic retroperitoneal fibrosis].
mesh_terms: D000368:Aged; D006801:Humans; D006869:Hydronephrosis / Q000209:etiology*; D008297:Male; D012185:Retroperitoneal Fibrosis / Q000150:complications / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D014517:Ureteral Obstruction / Q000150:complications / Q000209:etiology*; D014567:Urography
vernacular_title: Twee patiënten met idiopathische retroperitoneale fibrose.