Senthilnathan V, Gnanavelraja C, Alli Arimapamagan, M. Rajajeyakumar
BACKGROUND Anatomy of the frontal recess is difficult to understand, understanding the anatomy of frontal recess and frontal sinus outflow tract is essential for the surgeon to perform nasosinusal endoscopic surgery in case of frontal sinusitis to get a good postoperative result. Frontal recess anatomy can be best appreciated with the help of CT scan. The aim of the present study is to find out the incidence of frontal recess cells in patients with frontal sinusitis. MATERIALS AND METHODS This retrospective study involved a total of 50 patients who were suffering from frontal sinusitis taken up for CT scan for paranasal sinuses. Frontal recess cells were identified according to Bent et al classification by two radiologists individually and analysed with appropriate statistical method. RESULTS Among the total of 100 sides of CT scan paranasal sinuses, frontal recess cell were found in 62%; among them, Type 1 frontal recess cells were found in 46 sides (46%), Type 2 frontal recess cells were found in 3 sides (3%), Type 3 frontal recess cells were found in 12 sides (12%), Type 4 frontal recess cells were found in 1 side (1%), frontal cells were absent in 38 sides (38%). The percentage of distribution of frontal recess cells was more on left side in all age group in both sexes. CONCLUSION Type 1 frontal recess cell is the most common type and Type 4 frontal recess cell is the least common type in CT scan of paranasal sinuses in patients with frontal sinusitis.
