Table 5:

Relationship of turbinate size to BT, presence of BT at 2 time points, and nasal cycling^{^a}

Groups	Cases with BT	Cases with Size Asymmetry	BT Seen in Smaller Turbinates	Cases with Prior Exam	BT Seen on Prior Exam	Cases with Nasal Cycling
FS	16	10	6	9	4	0
Brain	29	12	4	13	10	3

↵a The occurrence of BT relative to turbinate size shows that BT did not primarily occur in the smaller turbinate when size asymmetry was present. Patients who had a BT on 1 scan often did not always have a BT on a prior exam. Nasal cycling indicates a change in nasal turbinate symmetry between the index and prior study. This occurred relatively infrequently.