Percentage of lesions with growth rates > 4.2 mm3/yeara
| Baseline to Most Recent Scan | 0–5 Years of Age | 6–10 Years of Age | 11–15 Years of Age | 16–20 Years of Age | |
|---|---|---|---|---|---|
| Small lesions | 14% | 21% | 12% | 10% | 16% |
| Indeterminate lesions | 96% | 100% | 81% | 62% | 69% |
| Resected lesions | 100% | 100%b | 100% | 100% | 100%c |
| All lesions | 34% | 41% | 35% | 30% | 33% |
↵a 4.2 mm3 was chosen to reflect an increase in growth of 2 mm in the AP, TV, and SI dimensions using an ellipsoid volume formula because a 2-mm increase would be an appreciable measurement on MR imaging.
↵b Of the 3 patients with symptomatic SGCTs in this age group, only 2/3 MRIs were considered diagnostic.
↵c Only 1 lesion was available for measurement.