J Korean Acad Oral Maxillofac Radiol.  1999 Aug;29(2):477-491.

Computerized Tomographic Study on the Anatomic Variation of the Paranasal Sinus

• Choi SY
• Lim SY
• Koh KJ

Abstract

OBJECTIVES
To evaluate the anatomic variations of the paranasal sinuses on computed tomographs.
MATERIALS AND METHODS
The author examined the CT images of the paranasal sinuses retrospectively in 500 patients who visited Chonbuk National University Hospital between January 1996 and December 1997.
RESULTS
The highest incidence of anatomic variation of the paranasal sinuses in bilateral structures was agger nasi cell(73.2%), followed by concha bullosa(31.1%), Onodi cell(24.0%), Haller cell(19.8%), maxillary sinus septum(13.0%), paradoxical middle turbinate(2.5%), pneumatized uncinate process(2.0%), and bent uncinate process. The highest incidence of anatomic variation in midline structures was nasal septum deviation(53.2%), followed by nasal septumaerated(29.4%), bulla galli(24.7%) asymmetric intersphenoid septum(22.3%), and nasal septum spur(13.8%). The correlation between anatomic variation and paranasal sinusitis was not found.
CONCLUSIONS
The results of this study will aid in the diagnosis and treatment of paranasal sinus diseases, especially in the treatment planning before functional endoscopic surgery.

Keyword

anatomic variation; paranasal sinus computerized tomograph

MeSH Terms

Anatomic Variation*
Diagnosis
Humans
Incidence
Jeollabuk-do
Maxillary Sinus
Nasal Septum
Paranasal Sinus Diseases
Paranasal Sinuses
Retrospective Studies
Sinusitis