Rhabdomyosarcoma is the most common soft-tissue sarcoma of childhood.
Recognition of specific genetic changes in the two most common subtype
s of rhabdomyosarcoma has allowed better understanding of the pathogen
esis of this disease. In addition, identification of prognostic factor
s and the use of risk-directed multimodal therapy have improved the ou
tcome for these patients significantly, with cure rates approaching 70
%.