title: Delayed presentation of pseudoabscess secondary to injection of pyrolytic carbon-coated beads bulking agent.
abstract: BACKGROUND
  Periurethral masses after injection of Durasphere bulking material have been previously reported to occur within 12 to 18 months of administration of the agent.
  
  
  METHODS
  We present a case report of an anterior vaginal wall mass resulting from a pseudoabscess containing Durasphere agent 5 years after injection. A literature review of urethral bulking agent complications and imaging is also provided.
  
  
  RESULTS
  The patient's anterior vaginal wall mass was thought to be due to a pseudoabscess secondary to injection of bulking agent. Pelvic imaging was helpful both in identifying the mass and in surgical planning. The patient was successfully treated by outpatient transvaginal resection of the material.
  
  
  CONCLUSIONS
  Urethral bulking agents, although generally safe and effective in the treatment of stress urinary incontinence, can lead to formation of pseudoabscesses. Although these are usually recognized within the first 18 months after injection, they may not be identified until several years later.
authors.affiliation: Division of Gynecology, Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI 48109-5276, USA. mitcberg@umich.edu
authors.forename: Mitchell B
authors.initials: MB
authors.lastname: Berger
authors.forename: Daniel M
authors.initials: DM
authors.lastname: Morgan
mesh_terms: D000038:Abscess / Q000139:chemically induced*; D000328:Adult; D001672:Biocompatible Materials / Q000008:administration & dosage / Q000009:adverse effects*; D004414:Dyspareunia / Q000209:etiology*; D005260:Female; D005936:Glucans / Q000008:administration & dosage / Q000009:adverse effects*; D006801:Humans; D015552:Injections, Intralesional; D008279:Magnetic Resonance Imaging; D013997:Time Factors; D014522:Urethral Diseases / Q000139:chemically induced*; D014550:Urinary Incontinence, Stress; D015040:Zirconium / Q000008:administration & dosage / Q000009:adverse effects*
chemical_list: D001672:Biocompatible Materials; D005936:Glucans; C431745:durasphere; D015040:Zirconium