Morphometry of frontal sinus in correlation to age and gender by computed tomography

The frontal sinus is funnel-shaped cavity separated by septum. The frontal sinus is uniqueto individual and often thought as a more symptomatic sinus because of the difficulties encountered intreatment of frontal rhino sinusitis. It requires the clinician to have precise knowledge of nasal sinusanatomy in the surgical treatment of sinusitis in recent years, particularly in endonasal endoscopic surgery.Materials and Methods: 100 patients (72 males and 28 females) undergoing coronal and axial sectionsof computed tomography scan of frontal sinus of head and neck aged between 1year to 90 years at theradiology department, Vydehi institute of medical science & research centre, Bangalore for reasons otherthan due to craniofacial abnormalities or sinus problem were taken for the study. Volume and dimensions ofthe frontal sinuses with its anatomical variations were obtained. Mean, SD, significant difference betweenage & gender was calculated.Results: Mean value of all the parameters of frontal sinus of both right & left were more in males comparedto females. Compared between sides, all the parameters of both sides in males were more in right sinusthan left side, in females right depth & volume were more on right side & height & width were more onleft side. There is a significant difference in height of right frontal sinus, width & volume of left frontalsinus between male & female. The maximum height was observed in the age group in males on right sidewas in 51-60 yrs & on left side was 71-80yrs, in females on right & left side was 61-70 yrs. The Maximumwidth, depth & volume of sinus in males & females on right & left side were in age group 51-60 yrs. Thereis a significant difference both side in males & females and in right & left sinus in depth was in age group11-20 yrs & on right side in 21-30 yrs age group.Conclusion: These results will be helpful in understanding normal and pathological conditions of thefrontal sinuses & useful in clinic