title: Retroperitoneal fibrosis.
mesh_terms: D000755:Anemia, Sickle Cell / Q000150:complications; D001327:Autoimmune Diseases / Q000150:complications; D006801:Humans; D008784:Methysergide / Q000009:adverse effects; D012185:Retroperitoneal Fibrosis / Q000139:chemically induced / Q000209:etiology*; D013966:Thyroiditis / Q000150:complications; D014652:Vascular Diseases / Q000150:complications
chemical_list: D008784:Methysergide