What is the radiation volume for unresected gross paraaortic lymph node in a Wilms patient?

This depends on the presence/absence of diffuse anaplasia (See AREN0321 [NCT00335556]) and age/field extent.

Patients with diffuse anaplasia who are Stage 3 due to the presence of residual nodal disease would receive 19.8 Gy to the flank, and then in the presence of residual disease, would receive a ...