Vol 62, No 4 (2003)
Short communication
Published online: 2003-09-05
Types of ethmoid sinus morphology on the basis of computed tomography examination
Folia Morphol 2003;62(4):407-409.
Abstract
The aim of the study was the application of computed tomography (CT) in the
evaluation of types of ethmoid morphology. The material consisted of 197 CT
examinations performed, using the Somatom AR.T (Siemens) CT scanner, in
patients referred for CT for reasons other than sinus pathology. The examinations
were performed in 2-mm contiguous axial scans. Ethmoid morphology
was evaluated by means of classification into 3 types according to the degree of
aeration and the relationship of the anterior ethmoid cells to the lacrimal sac on
transversal scans. The most common was the II type (medium relationship to the
lacrimal sac) found in 38.32% of the cases. Type III (large ethmoid sinus extending
in front of the lacrimal sac) occurred in 32.49% of the patients, while the
smallest sinus (Type I) was detected in the remaining 29.19% of the cases. In
almost 1/5 of the cases asymmetry of the bilateral ethmoid anatomy was noted.
It was concluded that CT examination was useful in the evaluation of ethmoid
sinus morphology in respect to the lacrimal sac.
Keywords: ethmoid sinuscomputed tomography
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