What volumes would you use for salvage radiation in a patient with a pelvic lymph node recurrence of cervical cancer initially treated with surgery alone?

Assuming a PET is done, we treat one nodal region above the involvement (the entire common illiac nodes for pelvic only and paraaortic for common illiac involvement) along with vagina and paravgina with concurrent cisplatinum. The dose to involved node is 55 Gy in 25 fractions (equivalent to 58-60 G...