RESULTS:

A total of 119 nasal cavities from 70 subjects was analyzed. Of these analyzed, AEA was located just behind the frontal recess in only 17 nasal cavities (14%) and one or two intervening cells were located between FS and AEA in the remaining 86% of the nasal cavities. The most frequent type of intervening cells was supra bullar cell, followed by supraorbital and frontal bullar cells. The mean D-AF and D-AS measurements were 8.58+/-5.56 mm (0-22.6 mm) and 1.65+/-1.90 mm (0-6.7 mm), respectively. D-AS was not significantly correlated with the distance between the FS and AEA (p= 0.433), therefore, D-AS could not be predicted.

CONCLUSION:

The relationship between FS and AEA was non-predictable, and in most cases, there were one or two intervening cells between FS and AEA. Therefore a thorough review of thin section CT scans is necessary.