Table 1.

Intergroup Rhabdomyosarcoma Study Group Grouping System (11)

Group	Definition
I	Localized tumor, completely removed with pathologically clear margins and no regional lymph node involvement
II	Localized tumor, grossly removed with (a) microscopically involved margins Localized tumor, grossly removed with (b) involved, grossly resected regional lymph nodes Localized tumor, grossly removed with (c) both
III	Localized tumor, with gross residual disease after grossly incomplete removal, or biopsy only
IV	Distant metastases present at diagnosis