title: Retrorectal pseudotumour induced by Ivalon.
authors.forename: R
authors.initials: R
authors.lastname: Thomas
authors.forename: J
authors.initials: J
authors.lastname: Deasy
authors.forename: D
authors.initials: D
authors.lastname: Royston
mesh_terms: D005260:Female; D005355:Fibrosis; D006801:Humans; D008875:Middle Aged; D011145:Polyvinyls / Q000009:adverse effects*; D012007:Rectum / Q000187:drug effects* / Q000473:pathology
chemical_list: D011145:Polyvinyls; C026699:ivalon sponge