Table 1 Intergroup Rhabdomyosarcoma Study Group clinical classification system for rhabdomyosarcoma[4]
Clinical group, extent of disease, resectability, and margin status | |
|---|---|
I | A: localized tumor confined to site of origin completely resected |
B: localized tumor infiltrating beyond site of origin completely resected | |
II | A: localized tumor gross total resection but with microscopic residual disease |
B: locally extensive tumor ( spread to regional lymph nodes) completely resected | |
III | A: localized or locally extensive tumor gross residual disease after biopsy only |
B: localized or locally extensive tumor gross residual disease after major resection (≥50% debulking) | |
IV | Any size primary tumor with or without regional lymph node involvement with distant metastases irrespective of surgical approach to primary tumor |