Would differentiating between embryonal vs alveolar rhabdomyosarcoma of the nasal cavity change your neoadjuvant chemotherapy regimen or make you consider neoadjuvant radiation in a locally advanced pleomorphic RMS?
40 yo adult patient with a~6cm mass with concern for skull base bony involvement (group III and stage III, no nodal involvement )
Answer from: Medical Oncologist at Academic Institution
The historic Embryonal vs. Alveolar differentiation is being replaced by a (PAX-FOXO) fusion positive vs. negative classification given the prognostic significance. In either case, the chemotherapy regimen is not likely to change in an adult patient. Pleomorphic RMS on the other hand, more common in...