OUTLINE: This is a randomized, multicenter study. Patients receive dactinomycin IV on days 1-3 and 15-17 and vincristine IV on days 1, 8, 15, and 22. Patients then undergo surgery about a week after completion of chemotherapy. After surgery, patients receive vincristine IV on days 1, 8, 15, and 22 and dactinomycin IV on days 8-12. Patients are then randomized to one of two treatment arms after week 9. Arm I: Patients receive dactinomycin IV on days 1-5 of week 10 and vincristine IV on day 1 of both weeks 10 and 11. This course is repeated during weeks 17 and 18. Arm II: Patients receive no further treatment. Patients are followed every 3 months for 3 years, then annually thereafter. Peer Reviewed and Funded or Endorsed by Cancer Research UK