title: Intralesional cidofovir for recurrent respiratory papillomatosis in children.
abstract: OBJECTIVE
  To assess the potential benefit of intralesional administration of cidofovir, an acyclic nucleoside phosphonate with activity against several DNA viruses, for treating severe respiratory papillomas in pediatric patients.
  
  
  METHODS
  Prospective case series.
  
  
  METHODS
  Tertiary care children's hospitals.
  
  
  METHODS
  Five pediatric patients with severe recurrent respiratory papillomatosis requiring laryngoscopy with carbon dioxide laser therapy more frequently than once a month to maintain airway patency. Each patient underwent between 12 and 33 laryngoscopies with laser treatment prior to being injected with cidofovir.
  
  
  METHODS
  Microsuspension laryngoscopy with intralesional injection of cidofovir (Vistide) in conjunction with mechanical debulking and carbon dioxide laser of papillomas.
  
  
  METHODS
  Papilloma stage at time of serial laryngoscopies.
  
  
  RESULTS
  One patient was disease free and 3 patients demonstrated a dramatic response to adjuvant therapy with cidofovir at the 9-month follow-up visit after the last injection of cidofovir. One patient showed an improvement in papilloma stage that was possibly related to concurrent therapy with interferon.
  
  
  CONCLUSIONS
  Intralesional injection of cidofovir seems to be of benefit in the treatment of severe respiratory papillomatosis in pediatric patients. Larger prospective studies with longer follow-up will be required before cidofovir can be considered an accepted means of managing this difficult disease.
authors.affiliation: Pediatric Otolaryngology, Children's Hospital and Health Center, San Diego, Calif 92123, USA.
authors.forename: S M
authors.initials: SM
authors.lastname: Pransky
authors.forename: A E
authors.initials: AE
authors.lastname: Magit
authors.forename: D B
authors.initials: DB
authors.lastname: Kearns
authors.forename: D R
authors.initials: DR
authors.lastname: Kang
authors.forename: N O
authors.initials: NO
authors.lastname: Duncan
mesh_terms: D000998:Antiviral Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D002675:Child, Preschool; D000077404:Cidofovir; D003596:Cytosine / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000627:therapeutic use; D005260:Female; D006801:Humans; D007223:Infant; D015552:Injections, Intralesional; D007822:Laryngeal Neoplasms / Q000188:drug therapy*; D008297:Male; D063065:Organophosphonates; D009943:Organophosphorus Compounds / Q000008:administration & dosage / Q000627:therapeutic use*; D010212:Papilloma / Q000188:drug therapy*; D010865:Pilot Projects; D011446:Prospective Studies; D012008:Recurrence; D016896:Treatment Outcome
chemical_list: D000998:Antiviral Agents; D063065:Organophosphonates; D009943:Organophosphorus Compounds; D003596:Cytosine; D000077404:Cidofovir