title: Acute postoperative retroperitoneal fibrosis and ureteral obstruction secondary to the use of Avitene.
mesh_terms: D000208:Acute Disease; D003094:Collagen / Q000009:adverse effects* / Q000627:therapeutic use; D005260:Female; D006488:Hemostasis, Surgical; D006801:Humans; D008875:Middle Aged; D011183:Postoperative Complications / Q000139:chemically induced*; D012185:Retroperitoneal Fibrosis / Q000139:chemically induced*; D014517:Ureteral Obstruction / Q000139:chemically induced*
chemical_list: D003094:Collagen