title: [Clinical analysis of nasal inverted papilloma complicated with nasal polyp].
abstract: OBJECTIVE
  To investigate the features and correlation of nasal inverted papilloma complicated with polyps.
  
  
  METHODS
  Twelve patients diagnosed as nasal inverted papilloma complicated with polyps were studied. The pathological specimens were taken from the surface, core and base of papilloma and sinus in every patient. Through comparing pathological findings, the features and correlation of nasal inverted papilloma complicated with polyps were evaluated.
  
  
  RESULTS
  In most cases, nasal inverted papilloma was located in the core and base of the mass, while the polyps were located in the surface of the mass.
  
  
  CONCLUSIONS
  Nasal inverted papilloma complicated with polyps may result from long-term inflammation that occurred in the surface of the epithelia of superficial papilloma. Therefore, the occurrence of neoplastic disease in core should be alerted in unilateral nasal polyp case.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, the General Hospital of Ningxia Medical University, Yinchuan, 750004, China. monsieurgao@163.com
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Gao
authors.forename: Li
authors.initials: L
authors.lastname: Hou
authors.forename: Ningyu
authors.initials: N
authors.lastname: Feng
authors.forename: Ruixia
authors.initials: R
authors.lastname: Ma
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009298:Nasal Polyps / Q000150:complications* / Q000473:pathology; D009669:Nose Neoplasms / Q000150:complications* / Q000473:pathology; D018308:Papilloma, Inverted / Q000150:complications* / Q000473:pathology