[Post-radiation choanal stenosis]. / Sténose choanale post-radique.

ABSTRACT

OBJECTIVE: Description of a rare complication of radiation therapy for nasopharyngeal carcinomas and the therapeutic value of surgical endoscopic desobstruction. CASE REPORT 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. CONCLUSION: 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.