title: [Post-radiation choanal stenosis].
abstract: OBJECTIVE
  Description of a rare complication of radiation therapy for nasopharyngeal carcinomas and the therapeutic value of surgical endoscopic desobstruction.
  
  
  METHODS
  A choanal stenosis observed in an 8-year-old boy, 3 years after radiation therapy and chemotherapy for a voluminous nasopharyngeal carcinoma. No initial involvement of the nasal fossa was observed. Concomitant relapse was excluded after clinical and histological examination.
  
  
  RESULTS
  A good functional result was achieved after the choana was unblocked in videoendoscopic surgery. After 9 months of follow-up, the breathing and odor functions remained intact.
  
  
  CONCLUSIONS
  Choanal stenosis is a rare complication of radiotherapy for nasopharyngeal carcinoma. Relapse should be excluded with biopsies beyond the stenosis. Treatment is based on endoscopic surgery.
authors.affiliation: Centre d'oncologie Ibn Rochd, Casablanca, Maroc. houssamhaddad@hotmail.com
authors.forename: H
authors.initials: H
authors.lastname: Haddad
authors.forename: N
authors.initials: N
authors.lastname: Sellal
authors.forename: Z
authors.initials: Z
authors.lastname: Bourhaleb
authors.forename: N
authors.initials: N
authors.lastname: Benchakroun
authors.forename: H
authors.initials: H
authors.lastname: Jouhadi
authors.forename: N
authors.initials: N
authors.lastname: Tawfiq
authors.forename: S
authors.initials: S
authors.lastname: Sahraoui
authors.forename: A
authors.initials: A
authors.lastname: Benider
mesh_terms: D002277:Carcinoma / Q000532:radiotherapy; D002648:Child; D003251:Constriction, Pathologic / Q000209:etiology; D006801:Humans; D008297:Male; D009296:Nasal Cavity / Q000528:radiation effects*; D009303:Nasopharyngeal Neoplasms / Q000532:radiotherapy; D011878:Radiotherapy / Q000009:adverse effects*; D013997:Time Factors