How would you treat a pediatric embryonal rhabdomyosarcoma of the kidney with preoperative rupture s/p nephrectomy and getting VAC/VI chemotherapy?

This is an uncommon clinical presentation. If there was diffuse abdominal spill, then whole abdominal radiotherapy would be indicated. Though recent COG study guidelines specify 24 Gy whole abdomen radiotherapy dose, that may not be adequate for microscopic tumor. In other tumors (ie, diffuse small ...