EBRO 2017

Contouring inguinal nodes CTV

• Perivascular margin (femoral vessels) – Anteromedial ≥35 mm, – Anterior ≥23 mm, – Anterolateral ≥25 mm, – Medial ≥22 mm

• “Lymph node recurrence is not seen posterior or lateral to femoral vessels, thus there is no need to add margins to the vessels in those regions.”

Gaffney DK. Int J Radiat Oncol Biol Phys. 2016;95(4):1191-200