Table 1.
Patient characteristics
| Characteristics | Number of patients (%) |
|---|---|
| Total | 37 (100) |
| Age (months) | |
| Median (range) | 2.8 (0‐5.8) |
| <1 month | 10 (27) |
| 1‐3 months | 8 (22) |
| 3‐6 months | 19 (51) |
| Sex (boys) | 22 (59) |
| Initial site | |
| HN non‐PM | 11 (30) |
| GU BP | 11 (30) |
| Limbs | 4 (11) |
| HN PM | 3 (8) |
| GU non‐BP | 2 (5) |
| Other sites | 6 (16) |
| Tumor size > 5 cm | 18 (49) |
| T status | |
| T1 | 13 (35) |
| T2 | 24 (65) |
| Lymph Node extension | |
| N0 | 31 (84) |
| N1 | 6 (16) |
| IRS stage | |
| I | 3 (9) |
| II | 2 (5) |
| III | 26 (70) |
| IV | 6 (16) |
| Pathology review | |
| RMS | 35 (95) |
| Embryonal | 19 (54) |
| Classic | 13 |
| Highly differentiated | 3 |
| Botryoid variant | 2 |
| Anaplastic | 1 |
| Spindle cell | 8 (24) |
| Fibrosarcoma‐like | 4 |
| VGLL2‐type | 3 |
| Triton‐like | 1 |
| Alveolar | 6 (17) |
| Not otherwise specified | 2 (5) |
| Rhabdoid tumor | 2 (5) |
Abbreviations: BP, Bladder‐Prostate; GU non‐BP, Genitourinary non‐Bladder‐Prostate; HN non‐PM, Head and Neck non‐Parameningeal; RMS, rhabdomyosarcoma; T1, Tumor localized to the organ or tissue of origin; T2, Tumor extending beyond the tissue of origin to involve one or more adjacent tissues