Gynae BT 2017

From GTV to CTV

What should be the margin around the nodal GTV?

The risk of extracapsular extension (ECE) has to be taken into account!

• Consider 3-5 mm around nodal GTV for ECE (and internal position shifts) • Take into account anatomical barriers (muscle, bone, surrounding organs) • Node CTV should be included in the elective CTV (45 -50 Gy)