title: [Analysis on 6 cases with nasal neuroendocrine carcinoma].
abstract: OBJECTIVE
  To investigate the clinical features, the CT, MRI features and therapeutic strategy of nasal neuroendocrine carcinoma (NEC).
  
  
  METHODS
  A retrospective study was carried out on 6 cases of NEC. 2 were female and 4 were male. Routine preoperative CT and MRI examination were performed. In one case,the tumor had invaded the brain and then was treated in department of oncology. Five cases were undertaken tumor resection under nasal endoscope, and combined with postoperative chemoradiation therapy.
  
  
  RESULTS
  The postoperative pathological report of 1 cases was large cell type, the remaining 4 cases were small cell type. One case treated in department of oncology had lived for 2 month with tumor in his body. One cases relapsed and died at 4 month after postoperation, 1 case was lost and 3 case did not relapse till now.
  
  
  CONCLUSIONS
  NEC of paranasal sinuses is malignant, but early detection, early diagnosis and treatment can improve the prognosis of this disease. For limited lesion of NEC, nasal endoscopic operation is an effective, safe and minimally injury method.
authors.affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, Clinical College of Yangzhou University, Yangzhou, 225001, China.
authors.forename: Li
authors.initials: L
authors.lastname: Xu
authors.forename: Bing
authors.initials: B
authors.lastname: Guan
authors.forename: Xin
authors.initials: X
authors.lastname: Peng
authors.forename: Ying
authors.initials: Y
authors.lastname: Xu
authors.forename: Ying
authors.initials: Y
authors.lastname: Wang
authors.forename: Jingtao
authors.initials: J
authors.lastname: Wu
mesh_terms: D000328:Adult; D018278:Carcinoma, Neuroendocrine / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D004724:Endoscopy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010255:Paranasal Sinus Neoplasms / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D011379:Prognosis; D012189:Retrospective Studies