title: Anatomical correlation between existence of concha bullosa and maxillary sinus volume.
abstract: OBJECTIVE
  The objective of this study was to assess the effects of concha bullosa variation on maxillary sinus volume and uncinate angle.
  
  
  METHODS
  The study group included 169 patients (338 sides) who underwent either surgical or medical treatment with the diagnosis of chronic rhinosinusitis. The paranasal sinus computed tomography of these patients was analyzed to measure maxillary sinus volume, uncinate angle and existence of concha bullosa. Subsequently, these variables were evaluated to find out possible relationship inbetween.
  
  
  RESULTS
  Mean maxillary sinus volume and uncinate angle at right and left sides were 15.21 ± 0.47 and 15.51 ± 0.48 mm(3), 30.57 ± 0.62° and 30.20 ± 0.68°, respectively. There was no difference between patients with or without concha bullosa in regard to maxillary sinus volume and uncinate angle at both sides. Maxillary sinus volume and degree of uncinate angle did not show any significant correlation at both sides; r = -0.124, p = 0.107 and r = -0.136, p = 0.078.
  
  
  CONCLUSIONS
  In conclusion, concha bullosa is a common anatomical variation at nasal cavity. The existence of concha bullosa does not have any association with the volume of maxillary sinus and angle of uncinate process.
authors.affiliation: Department of Otolaryngology, Uludag University Medical School, Gorukle, Nilufer, 16059, Bursa, Turkey. uygardemir@hotmail.com.
authors.forename: Uygar Levent
authors.initials: UL
authors.lastname: Demir
authors.affiliation: Department of Otolaryngology, Uludag University Medical School, Gorukle, Nilufer, 16059, Bursa, Turkey.
authors.forename: M E
authors.initials: ME
authors.lastname: Akca
authors.affiliation: Department of Radiology, University of Uludag, Bursa, Turkey.
authors.forename: R
authors.initials: R
authors.lastname: Ozpar
authors.affiliation: Department of Otolaryngology, Uludag University Medical School, Gorukle, Nilufer, 16059, Bursa, Turkey.
authors.forename: C
authors.initials: C
authors.lastname: Albayrak
authors.affiliation: Department of Radiology, University of Uludag, Bursa, Turkey.
authors.forename: B
authors.initials: B
authors.lastname: Hakyemez
mesh_terms: D000328:Adult; D063405:Anatomic Variation; D005260:Female; D006801:Humans; D008297:Male; D008443:Maxillary Sinus / Q000000981:diagnostic imaging*; D009300:Nasal Septum / Q000000981:diagnostic imaging; D010256:Paranasal Sinuses / Q000000981:diagnostic imaging; D012189:Retrospective Studies; D012852:Sinusitis / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D014420:Turbinates / Q000000981:diagnostic imaging*
keywords: Concha bullosa; Maxillary sinus volume; Uncinate process