Combination Chemotherapy in Treating Young Patients With Nonmetastatic Rhabdomyosarcoma

RATIONALE: Drugs used in chemotherapy work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Giving more than one drug (combination chemotherapy) may kill more tumor cells. It is not yet known which combination chemotherapy regimen is more effective in treating rhabdomyosarcoma. PURPOSE: This randomized phase III trial is studying different combination chemotherapy regimens to compare how well they work in treating young patients with nonmetastatic rhabdomyosarcoma.