Growth rates determined from Bayesian measurements of tumor size in 38 patients who underwent serial MR imaging
| Rate of Growth | Significance Level 1ς | Significance Level 3ς | ||
|---|---|---|---|---|
| No. with Growth | Volume Doubling Time <1 y/<2 y/>2 y | No. with Growth (3ς) | Volume Doubling Time(3ς) <1 y/<2 y/>2 y | |
| Significant growth | 19 | 7/7/5 | 12 | 6/5/1 |
| “No growth” | 13 | 0/0/13 | 24 | 1/2/21 |
| Significant shrinkage | 6 | 0/0/6 | 2 | 0/0/2 |
Note.—Data show the number of vestibular schwannomas demonstrating measurable growth greater than the estimated measurement error of 70 mm3 (1ς) and 3 times the measurement error (3ς). Measurements at 1ς indicate possible growth and measurements at 3ς indicate definite growth.