RMS
Rhabdomyosarcoma
MTS
Metastatic
EpSSG
European Pediatric Soft Tissue Sarcoma Study Group
CT
Computed tomography
MRI
Magnetic resonance imaging
PET Positron emission tomography
IVA
Ifosfamide – vincristine - actinomycin D
IVADo
Ifosfamide - vincristine - actinomycin D - doxorubicin
CR
Complete response
PR
Partial response
MR
Minor response
SD
Stable disease
PD
Progression of disease
EFS
Event-free survival
OS
Overall survival