Abstract

Considering the importance of frontal sinus from the view of otolaryngologist, 200 adults, constituting 100 males and 100 females, xray were studied. Mean frontal sinus size was found to be 14. 81 ± 8. 04 (SD) sq. cm., range O to 32. 7 sq. cm in males and 13. 02 ± 7. 11 (SD) sq. cm — range O to 38. 3 sq. cm. Bilateral asymmetry was found and the mean of bigger frontal sinus was much larger than the average of the smaller ones (highly significant, p < 0. 001.) both in males and females. Absence of one frontal sinus was in 7 percent cases and in 2 percent cases there was bilateral absence.

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