Time since SRS | Group A (n = 81 lesions)a | Group B (n = 83 lesions)a |
---|---|---|
6 weeks | 30.9% | 0% |
3 months | 16.0% | 20.5% |
4.5 months | 7.4% | 29% |
6 months | 12.3% | 33% |
7.5 months | 4.9% | 8.5% |
9 months | 6.2% | 2.5% |
10.5 months | 3.7% | 1% |
12 months | 6.2% | 2.5% |
13.5 months | 2.5% | 1% |
15 months | 1.2% | 0% |
16.5 months | 2.5% | 1% |
18 months | 3.7% | 0% |
19.5 months | 0% | 0% |
21 months | 2.5% | 1% |
22.5 months | 0% | 0% |
24 months | 0% | 0% |
↵a Group A denotes lesions that increased in size to >120% of the pretreatment volume (ie, each timepoint is compared with the initial treatment volume). Group B denotes lesions whose volumes fluctuated in size during follow-up but never increased to a volume exceeding 120% of the pretreatment volume (ie, each timepoint is compared with both the initial treatment and prior time point volumes).