PURPOSE: To report on acquired @entity70332 and @entity1146 after radiotherapy for @entity189 . MATERIALS AND METHODS: Four @entity1 with acquired bilateral choanal @entity1146 and 2 with severe @entity850 in the posterior choanae were identified after treatment of @entity189 with radiotherapy. The mean age was 42 years (range, 29 to 48 years). Two @entity1 had stage II, and 4 had stage III disease, according to Ho's classification. They all received a 66 Gy dose of external irradiation delivered to the nasopharynx, and a mean dose of 62.6 Gy to the neck. Five @entity1 had an additional 20 Gy delivered to the parapharyngeal region, and 1 @entity1 had intracavitatory brachytherapy of 18 Gy delivered to the nasopharynx. The mean onset of symptoms was 10.5 months (range, 2 to 40 months) postirradiation. All @entity1 were treated by transnasal endoscopic resection. Merocel epsitaxis packing (Medtronic Xomed, Jacksonville, FL) was used to stent the nasal airway for 2 weeks postoperatively. RESULTS: The mean follow-up was 16.2 months (range, 14 to 18 months) after surgery. Four @entity1 (67%) were symptom-free. Two @entity1 (33%) had unilateral restenosis in the postnasal space that required revision surgery and further nasal stenting for 2 weeks, and both were subsequently free from further restenosis. No @entity260 occurred. CONCLUSION: Acquired @entity70332 and @entity1146 is an unusual long-term complication after radiotherapy that can be successfully treated with transnasal endoscopic resection. A 2-week Merocel nasal stent is recommended to prevent restenosis in the posterior choanae.

Acquired @entity70332 and XXXX : management of this unusual complication after radiotherapy for @entity189 .

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity70332 :: ('MESH:C562435', 'Disease') :: ['posterior choanal stenosis'] @entity189 :: ('MESH:D002277', 'Disease') :: ['nasopharyngeal carcinoma'] @entity260 :: ('MESH:D011183', 'Disease') :: ['adverse postoperative complication'] @entity1146 :: ('MESH:D018633', 'Disease') :: ['atresia'] @entity850 :: ('MESH:D003251', 'Disease') :: ['unilateral choanal stenosis']
@entity1146 :: (MESH:D018633,Disease) :: ['atresia']
