Frequency and size of residual cervical thymus visualized on neck CTa
| Age (yr) | Frequency | Size (mm) |
|---|---|---|
| 20–29 | 52% (42–62) | 13.7 |
| 30–39 | 38% (29–48) | 12.5 |
| 40–49 | 25% (18–34) | 11.6 |
| 50–59 | 16% (10–24) | 11.1 |
| 60–69 | 12% (7–20) | 10.7 |
| 70–79 | 8% (4–15) | 12.9 |
| 80 and older | 6% (3–12) | 12.5 |
↵a Frequency is reported with 95% confidence intervals in parentheses. Size is the mean of the maximal axial dimension, reported in millimeters. Both of these parameters were statistically significantly correlated with age.