title: [Histolopathologic features of CT scan typing of chronic rhinosinusitis and relation with prognosis].
abstract: OBJECTIVE
  To evaluate the histopathologic changes of the ethmoid bone in CT scan typing of chronic rhinosinusitis (CRS), and investigate relations with outcomes of endoscopic surgery.
  
  
  METHODS
  One hundred and twelve random CRS patients undergoing endoscopic sinus surgery at Tongren hospital were prospectively evaluated. According to the preoperative CT scan, these patients were divided into three groups of CT scan typing. The bony changes and bone remodeling of ethmoid bone were graded and relations with outcomes of endoscopic surgery were investigated.
  
  
  RESULTS
  The CT scan typing results of ethmoid sinus of CRS were as followed: 22.3% (type III), 39.3% (type II), and 38.4% (type I). Comparison of bone remodeling and postoperative endoscopic scores between the three groups revealed a significant difference (P = 0.01, P = 0.02). A trend toward more advanced bone remodeling grade in association with a higher postoperative endoscopic scores was identified, with a statistically significant correlation.
  
  
  CONCLUSIONS
  The Chinese CT scan typing of CRS has its pathological basis and can a useful method to predict the surgical outcomes of CRS. The new bone formation or bony tissue remodeling of sinus often represents pathogenesis of CRS and implicates the prognosis of sinus surgery.
authors.affiliation: Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Ministry of Education, Beijing, China.
authors.forename: Tong
authors.initials: T
authors.lastname: Wang
authors.forename: Bing
authors.initials: B
authors.lastname: Zhou
authors.forename: Sheng-zhong
authors.initials: SZ
authors.lastname: Zhang
authors.forename: Er-zhong
authors.initials: EZ
authors.lastname: Fan
authors.forename: Hong-rui
authors.initials: HR
authors.lastname: Zang
authors.forename: Ying
authors.initials: Y
authors.lastname: Li
mesh_terms: D000328:Adult; D002908:Chronic Disease; D005005:Ethmoid Sinus / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D011446:Prospective Studies; D012852:Sinusitis / Q000145:classification / Q000000981:diagnostic imaging* / Q000473:pathology*; D014057:Tomography, X-Ray Computed; D055815:Young Adult