Treatment and outcomes
| Variable | Counts (percentage) |
| Treatment | |
| Curettage only | 5 (17%) |
| Curettage total | 8 (27%) |
| Steroid injection only | 6 (20%) |
| Chemotherapy only | 13 (43%) |
| Biopsy only | 4 (13%) |
| Radiotherapy | 1 (3%) |
| Chemotherapy involved in treatment | |
| Vinblastine+prednisone | 11 (37%) |
| Cytarabine | 3 (10%) |
| 6-mercaptopurine | 3 (10%) |
| Methotrexate | 2 (7%) |
| Clofarabine | 1 (3%) |
| Cladribine | 1 (3%) |
| Recurrence rate (any site) | |
| All | 8 (27%) |
| Curettage or steroid only | 4 (37%) |
| Total follow-up (years)* | 5.2 (0.6–16.8) |
*Data are presented with median (range).