Document Detail

Anatomic variations of the paranasal sinuses: CT examination for endoscopic sinus surgery.
MedLine Citation:
PMID:  10077255     Owner:  NLM     Status:  MEDLINE    
Chronic rhinosinusitis endoscopic surgery requires an accurate evaluation of diseases and paranasal sinus anatomic variations. This study aims to show the main anatomical variations in the ostiomeatal complex and paranasal sinuses which are usually depicted by computed tomography (CT). CT scans obtained 2 mm thickness in axial and coronal plane from a series of 200 patients with chronic sinusitis were examined to determine the prevalence of anatomic variants. Anatomical variations determined were supraorbital recess in 6%, concha bullosa in 30%, sphenomaxillary plate in 17%, infra-orbital ethmoid cells (Haller's cells) in 6%, spheno-ethmoid cells (Onodi's cells) in 12%, pneumatization of the anterior clinoid process in 6%, carotid artery bulging into the sphenoid sinus in 8%, pneumatization of the uncinate process in 2%, paradoxical curvature of the middle turbinate in 3% and septal deviation in 36%. Level difference between the ethmoid roof and nasal vault was an average of 8 mm in right side and 9.5 mm in left side. Awareness of these different variations will help the rhinologic surgeon in his orientation during endoscopic surgical procedures.
H Arslan; A Aydinlioğlu; M Bozkurt; E Egeli
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Auris, nasus, larynx     Volume:  26     ISSN:  0385-8146     ISO Abbreviation:  Auris Nasus Larynx     Publication Date:  1999 Jan 
Date Detail:
Created Date:  1999-06-28     Completed Date:  1999-06-28     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7708170     Medline TA:  Auris Nasus Larynx     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  39-48     Citation Subset:  IM    
Department of Radiology, School of Medicine, Yüzüncü Yil University, Van, Turkey.
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MeSH Terms
Chronic Disease
Endoscopy / methods*
Ethmoid Sinus* / anatomy & histology,  radiography,  surgery
Retrospective Studies
Sinusitis / radiography*,  surgery*
Sphenoid Sinus* / anatomy & histology,  radiography,  surgery
Tomography, X-Ray Computed

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