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Submitted: 16 May 2007 Modified: 16 April 2019
HERDIN Record #: PCHRDPC051052

Computed tomographic analysis of paranasal sinus anatomic variations among Filipinos.

Christopher  A. Santos,
Peter Simon Jarin

OBJECTIVE: To determine prevalence of the different bony anatomic variations and mucosal abnormalities among Filipino patients seen in a tertiary hospital.

STUDY DESIGN: Descriptive Study

SETTING: This study was conducted at the Radiology department of said hospital where evaluation of high resolution PNS CT was performed by the investigators.

a. Inclusion criteria: 1. Patients were randomly selected from a pool of subjects who had a computed tomography scan of the paranasal sinuses (screening coronal) done within the last two years;
b. Exclusion criteria: 1. Patients of foreign nationality 2. Previous nasal surgery

RESULTS: A total of 51 plates were evaluated, this number was multiplied by 2 to represent both nasal cavities giving a total population of 102. This was however not done for the variants olfactory fossa type and septal deviation. Results showed the incidence of the following variants: Agger Nasi Cells=86 percent, Ethmoid Bulla=97 percent, Haller Cells=28 percent, most common Recessus Terminalis of the Uncinate Process=75 percent (Lamina Papyracea), most common Olfactory Fossa Type 1=15.6 percent, Floating Ant Ethmoid Artery= 65.6 percent, Normal Middle Turbinate=73.5 percent, Type 1 Septal Deviation was more common=54.9 percent, Dehiscence of Lamina Papyracea=37 percent, Bulging Orbital Contents=22 percent, Pneumatized Crista Galli=98 percent, Hypoplasia of a paranasal sinus was a rare occurrence=2.9 percent (all involving the Frontal Sinus).

CONCLUSION: High resolution PNS screening coronal is an important tool in determining the different anatomic variants which will make for better pre-operative planning.

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Journal Article, Original
Philippine Journal of Otolaryngology Head and Neck Surgery
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