title: [Unusual forms of retroperitoneal fibrosis].
abstract: The numerous forms of secondary retroperitoneal fibrosis which do not belong to Ormond's disease are discussed and some rare iatrogenic clinical pictures described. For the first time polyvinylpyrrolidone granulomas, causing obstructive renal failure are reported.
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008784:Methysergide / Q000009:adverse effects; D008875:Middle Aged; D011205:Povidone / Q000009:adverse effects; D011859:Radiography; D012185:Retroperitoneal Fibrosis / Q000139:chemically induced / Q000000981:diagnostic imaging*
chemical_list: D011205:Povidone; D008784:Methysergide
vernacular_title: Seltene Formen der Retroperitonealfibrose.