title: [Cause of epistaxis in patients irradiated for nasopharyngeal carcinoma].
abstract: OBJECTIVE
  To investigate the cause of epistasis in patients irradiated for nasopharyngeal carcinoma.
  
  
  METHODS
  Seventy nasopharyngeal carcinoma cases with epistasis after radiotherapy were retrospectively analyzed.
  
  
  RESULTS
  The causes of epistasis were local nasopharyngeal carcinoma recurrent 34.3% (24/70), pseudoaneurysm 14.3% (10/70) and nasopharyngeal crust 51.4% (36/70). Seven cases with local recurrent, 3 cases with pseudoaneurysm and 1 cases with nasopharyngeal crust and osteoradionecrosis died of intractable epistasis.
  
  
  CONCLUSIONS
  Epistasis in patients irradiated for nasopharyngeal carcinoma is dangerous complication, especially in cases with local recurrent and pseudoaneurysm. Nasopharyngeal crust must be treated actively.
authors.affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, the Affiliated Foshan Hospital of Sun Yet-sen University, Foshan, 528000, China. zjli@fsyyy.com
authors.forename: Jianli
authors.initials: J
authors.lastname: Zhang
authors.forename: Yuejian
authors.initials: Y
authors.lastname: Wang
authors.forename: Weixiong
authors.initials: W
authors.lastname: Chen
mesh_terms: D017541:Aneurysm, False / Q000209:etiology*; D004844:Epistaxis / Q000209:etiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009303:Nasopharyngeal Neoplasms / Q000532:radiotherapy*; D012189:Retrospective Studies