while four of the seven tumors presented as high-grade undifferentiated neoplasms , they were readily categorized on the basis of immunocytochemical findings in which the five rhabdomyosarcomas were positive for muscle-specific actin ( hhf 35 ) and the two stromal sarcomas were positive for vimentin only .
C0035412
rhabdomyosarcomas
C0026845
muscle