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

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...