Would you recommend prophylactic retro-peritoneal RT in an adolescent with paratesticular rhabdomyosarcoma, s/p radical inguinal orchiectomy without a lymph node dissection?

If a staging RPLND is NOT performed, is there a role for prophylactically irradiating the lymph nodes, even in the setting of a negative PET/CT at diagnosis in a >10 year old male with Rhabdomyosarcoma? If so, what RT field would you recommend?

Answer from: Radiation Oncologist at Academic Institution

Ideally, in children over 10 years of age with a diagnosis of paratesticular RMS, a retroperitoneal LN sampling (taking 7-12 LNs) at diagnosis should be performed unless obvious gross disease in the nodal region is present. The risk of occult LN involvement is higher in those children 10 years or ol...

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Would you recommend prophylactic retro-peritoneal RT in an adolescent with paratesticular rhabdomyosarcoma, s/p radical inguinal orchiectomy without a lymph node dissection?

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