Table 1.
Demographic and disease characteristics of the study population.
| Age in years at diagnosis (mean, range) | 23.5 | 1.8-49.8 | |
|---|---|---|---|
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| Gender (n, %) | Male | 77 | 61.1 |
| Female | 49 | 38.9 | |
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| Ethnicity(n, %) | Caucasian | 88 | 69.8 |
| African American | 14 | 11.1 | |
| Hispanic | 20 | 15.9 | |
| Other | 4 | 3.2 | |
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| Diagnosis (n, %) | Osteosarcoma | 66 | 52.4 |
| Ewing sarcoma | 24 | 19.0 | |
| Soft tissue sarcomas | 27 | 21.4 | |
| Other | 9 | 7.1 | |
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| Tumor Location (n, %) | Axial | 25 | 19.8 |
| Appendicular | 101 | 8.0 | |
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| Tumor size (n, %) | Small (<5 cm) | 21 | 16.7 |
| Large (≥5 cm) | 105 | 83.3 | |
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| Number of nodules at diagnosis (n, %) | None | 75 | 59.5 |
| Solitary | 26 | 20.6 | |
| Multiple unilateral | 16 | 12.7 | |
| Multiple bilateral | 10 | 7.9 | |
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| Size of nodules at diagnosis (n, %) | <3 mm | 22 | 43.1 |
| 3-5 mm | 16 | 31.4 | |
| 5-10 mm | 13 | 25.5 | |
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| Chemotherapy regimen (n, %) | MAP | 52 | 49.2 |
| MAPI | 4 | 3.2 | |
| MAPIE | 10 | 7.9 | |
| VACIE | 24 | 19 | |
| AI | 26 | 20.6 | |
| None | 10 | 7.9 | |
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| |||
| Total | 126 | ||
M = Methotrexate, A = Adriamycin, P = Cis/carboplatinuum, I = Ifosfamide, E = Etoposide, C = Cyclophosphamide, V = Vincristine