title: Cone beam CT analysis of Haller cells: prevalence and clinical significance.
abstract: OBJECTIVE
  Haller cells are anterior ethmoid air cells located in the medial orbital floor immediately lateral to the maxillary infundibulum. The purpose of this study was to demonstrate the prevalence and relationship between the existence and size of these cells with ipsilateral maxillary sinusitis and orbital floor dehiscence as visualized on cone beam CT (CBCT) images.
  
  
  METHODS
  CBCT image volumes of 50 patients were retrieved and analysed. All CBCT images were acquired with a 9-inch field of view scan. χ(2) and Cochran-Mantel-Haenszel tests were used for statistical analysis of the obtained data, and p-values of <0.05 were considered to be statistically significant.
  
  
  RESULTS
  There was no statistically significant association between the existence and size of Haller cells and maxillary sinusitis. There was a significant association between Haller cells and orbital floor dehiscence.
  
  
  CONCLUSIONS
  The explanation of maxillary sinusitis on the basis of mechanical obstruction is unlikely. This study provides evidence for the usefulness of CBCT scan in delineation of the sinonasal anatomy.
authors: Department of Oral and Maxillofacial Radiology, Midwestern University College of Dental Medicine-Illinois (CDMI), Downers Grove, IL, USA;
authors: R
authors: R
authors: Mathew
authors: G
authors: G
authors: Omami
authors: A
authors: A
authors: Hand
authors: D
authors: D
authors: Fellows
authors: A
authors: A
authors: Lurie
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000388:Air; D016009:Chi-Square Distribution; D054893:Cone-Beam Computed Tomography; D005260:Female; D006801:Humans; D008297:Male; D008443:Maxillary Sinus / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D015523:Maxillary Sinusitis / Q000000981:diagnostic imaging* / Q000473:pathology*; D008875:Middle Aged; D009916:Orbital Diseases / Q000000981:diagnostic imaging* / Q000473:pathology*; D018709:Statistics, Nonparametric; D055815:Young Adult
keywords: Haller cells; cone beam CT; maxillary sinusitis; orbital floor dehiscence
references: Acta Otorhinolaryngol Belg. 2000;54(1):39-43
references: 10719592
references: Am J Rhinol. 2008 Mar-Apr;22(2):170-4
references: 18416975
references: Laryngoscope. 2005 Dec;115(12):2138-43
references: 16369157
references: Laryngorhinootologie. 1993 Dec;72(12):599-604
references: 8141938
references: Eur J Radiol. 2004 Jun;50(3):296-302
references: 15145491
references: Ann Otol Rhinol Laryngol Suppl. 1988 Sep-Oct;134:3-23
references: 3140703
references: AJNR Am J Neuroradiol. 2009 Aug;30(7):1285-92
references: 19461061
references: Laryngoscope. 1993 Mar;103(3):247-52
references: 8441311
references: J Med Assoc Thai. 2005 Sep;88 Suppl 4:S110-5
references: 16623013
references: Acta Otolaryngol. 2006 Oct;126(10):1067-72
references: 16923712
references: Laryngoscope. 1991 Jan;101(1 Pt 1):56-64
references: 1984551
references: Surg Radiol Anat. 2003 Feb;24(6):400-5
references: 12652368
references: Am J Rhinol. 1997 May-Jun;11(3):219-23
references: 9209594
references: Radiographics. 1993 Mar;13(2):381-415
references: 8460226
references: Am J Rhinol. 2008 Sep-Oct;22(5):511-5
references: 18954511
references: J Anat. 2000 Aug;197 ( Pt 2):221-7
references: 11005714
references: Folia Morphol (Warsz). 2009 Nov;68(4):260-4
references: 19950077