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Prevalence of Anaplasia Amongst RMS Subtypes by ICR Classification.
| Anaplasia | |||
|---|---|---|---|
| Histology | None | Focal | Diffuse |
| Alveolar | 139 | 12 (8%) | 5 (3%) |
| Embryonal | 223 | 23 (9%) | 22 (8%) |
| Botryoid | 36 | 1 (3%) | 2 (3%) |
| Spindle cell | 17 | 2 (11%) | 0 |
| Rhabdomyosarcoma NOS | 32 | 0 | 2 (6%) |
| Undifferentiated sarcoma | 11 | 1 (8%) | 1 (8%) |
| Sarcoma, not classifiable | 11 | 0 | 0 |
| Other | 4 | 0 | 0 |
| Unknown | 1 | 1 | 0 |
| Total | 474 | 40 (7%) | 32 (6%) |
NOS; not otherwise specified
