title: [To incise the dentigerous cyst on the floor of nasal cavity (affiliated 2 cases)].
abstract: OBJECTIVE
  To report 2 cases of the rare disease-the dentigerous cyst on the floor of nasal cavity and explore etiology, the method of diagnosis and treatment.
  
  
  METHODS
  To review the literature briefly and discuss the lesions' pathology, diagnosis and surgical approach.
  
  
  RESULTS
  One case originated from the supernumerary teeth on the floor of left nasal cavity, and the other left reversed lateral incisor. Both had the medical history of upper lip and para-nose swelling. CT scan or X-ray showed radiopaque mass, surrounded by a radiolucent cyst like lesion. Both were incisied by nasal endoscope.
  
  
  CONCLUSIONS
  The dentigerous cyst may originate from impacted or supernumerary teeth. It's diagnosed by clinical feature, X-ray or CT scan. It is a selective and suitable surgical approach to incise the dentigerous cyst by nasal endoscope.
authors: Department of Otolaryngology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, 430030, China. zhtlancet@yahoo.com.cn
authors: Hongtao
authors: H
authors: Zhen
authors: Qixue
authors: Q
authors: Gao
authors: Yonghua
authors: Y
authors: Cui
authors: Weijia
authors: W
authors: Kong
authors: Fang
authors: F
authors: Huang
mesh_terms: D000328:Adult; D003803:Dentigerous Cyst / Q000000981:diagnostic imaging / Q000601:surgery*; D004724:Endoscopy; D006801:Humans; D008297:Male; D009296:Nasal Cavity / Q000473:pathology; D009668:Nose Diseases / Q000000981:diagnostic imaging / Q000601:surgery*; D011859:Radiography