Table 5. Soft Tissue Sarcoma Committee of the Children's Oncology Group: Rhabdomyosarcoma Risk Group Classification

Risk Group HistologyStageGroup
Low risk Embryonal1I, II, III
Embryonal2, 3I, II
Intermediate riskEmbryonal2, 3III
Alveolar1, 2, 3I, II, III
High risk Embryonal or Alveolar4IV

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