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High-resolution computed tomography analysis of the prevalence of onodi cells.
MedLine Citation:
PMID:  22685058     Owner:  NLM     Status:  Publisher    
OBJECTIVES/HYPOTHESIS: Onodi cells are the posterior-most ethmoid air cells that lie superior to the sphenoid sinus. Identification of these cells is essential prior to endoscopic sinus and skull base surgery due to their intricate relationship with the optic nerves and carotid arteries, which may lead to deleterious complications. In this study, high-resolution computed tomography (HRCT) scans from 170 adult-patients were analyzed by two independent observers for the presence of Onodi cells. STUDY DESIGN: Radiographic analysis at a tertiary care medical center. METHODS: A retrospective analysis was performed on patients undergoing HRCT between July 2008 and September 2010. Incidence of Onodi cells and demographic data were collected. RESULTS: The overall prevalence of Onodi cells in this cohort was 65.3%. Subgroup analysis based on ethnicity showed a rate of Onodi cells of 83.3% in Asians, 73.1% in whites, 57.0% in African Americans, and 62.7% in Hispanics. The prevalence of Onodi cells was not significantly different among the different ethnicities (P > .05). However, this was limited by a small sample size in some ethnic groups. Onodi cell prevalence was equivalent among males and females: 62.2% and 63.5% respectively (P > .05). Overall, our results show a greater prevalence of Onodi cells than previously reported. CONCLUSIONS: We found a higher prevalence of Onodi cells in our cohort than previously reported in the literature. Therefore, it is important for surgeons to anticipate the presence of these cells during endoscopic sinus and skull base procedures to prevent potential complications. Laryngoscope, 2012.
Senja Tomovic; Azadeh Esmaeili; Norman J Chan; Osamah J Choudhry; Pratik A Shukla; James K Liu; Jean Anderson Eloy
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-11
Journal Detail:
Title:  The Laryngoscope     Volume:  -     ISSN:  1531-4995     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-6-11     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8607378     Medline TA:  Laryngoscope     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 The American Laryngological, Rhinological, and Otological Society, Inc.
Department of Otolaryngology-Head and Neck Surgery.
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